/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:42:15,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:42:15,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:42:15,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:42:15,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:42:15,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:42:15,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:42:15,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:42:15,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:42:15,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:42:15,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:42:15,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:42:15,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:42:15,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:42:15,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:42:15,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:42:15,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:42:15,662 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:42:15,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:42:15,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:42:15,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:42:15,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:42:15,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:42:15,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:42:15,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-09-20 20:42:15,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 20:42:15,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 20:42:15,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 20:42:15,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 20:42:15,682 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 20:42:15,682 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 20:42:15,683 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 20:42:15,683 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 20:42:15,683 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:42:15,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:42:15,684 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:42:15,688 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 20:42:15,726 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:42:15,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:42:15,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:42:15,727 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:42:15,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:42:15,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:42:15,727 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:42:15,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:42:15,728 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:42:15,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:42:15,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:42:15,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:42:15,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:42:15,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:42:15,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:42:15,729 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:42:15,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:42:15,729 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:42:15,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:42:15,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:42:15,729 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:42:15,729 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:42:15,729 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:42:15,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:42:15,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:42:15,730 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:42:15,730 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:42:15,730 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:42:15,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:42:15,730 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:42:15,730 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:42:15,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:42:15,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:42:15,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:42:15,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:42:15,918 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:42:15,919 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:42:15,919 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2022-09-20 20:42:15,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c16f360c6/574d51c16af9403d89123845557a4e16/FLAGea24a4fe7 [2022-09-20 20:42:16,422 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:42:16,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i [2022-09-20 20:42:16,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c16f360c6/574d51c16af9403d89123845557a4e16/FLAGea24a4fe7 [2022-09-20 20:42:16,470 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c16f360c6/574d51c16af9403d89123845557a4e16 [2022-09-20 20:42:16,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:42:16,475 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:42:16,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:42:16,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:42:16,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:42:16,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:42:16" (1/1) ... [2022-09-20 20:42:16,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b2c979 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:16, skipping insertion in model container [2022-09-20 20:42:16,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:42:16" (1/1) ... [2022-09-20 20:42:16,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:42:16,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:42:16,702 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-09-20 20:42:16,958 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i[75009,75022] [2022-09-20 20:42:17,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:42:17,018 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:42:17,026 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-09-20 20:42:17,065 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-3_2-container_of-global.i[75009,75022] [2022-09-20 20:42:17,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:42:17,149 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:42:17,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17 WrapperNode [2022-09-20 20:42:17,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:42:17,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:42:17,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:42:17,150 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:42:17,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:17,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:17,195 INFO L138 Inliner]: procedures = 468, calls = 52, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2022-09-20 20:42:17,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:42:17,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:42:17,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:42:17,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:42:17,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:17,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:17,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:17,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:17,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:17,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:17,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:17,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:42:17,225 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:42:17,225 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:42:17,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:42:17,226 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (1/1) ... [2022-09-20 20:42:17,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:42:17,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:42:17,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-20 20:42:17,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-20 20:42:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 20:42:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:42:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 20:42:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 20:42:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:42:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-09-20 20:42:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:42:17,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:42:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-09-20 20:42:17,299 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-09-20 20:42:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:42:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:42:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:42:17,301 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 20:42:17,604 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:42:17,605 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:42:17,878 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:42:17,890 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:42:17,890 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 20:42:17,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:42:17 BoogieIcfgContainer [2022-09-20 20:42:17,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:42:17,894 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:42:17,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:42:17,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:42:17,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:42:16" (1/3) ... [2022-09-20 20:42:17,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff8be52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:42:17, skipping insertion in model container [2022-09-20 20:42:17,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:42:17" (2/3) ... [2022-09-20 20:42:17,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff8be52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:42:17, skipping insertion in model container [2022-09-20 20:42:17,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:42:17" (3/3) ... [2022-09-20 20:42:17,910 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2022-09-20 20:42:17,924 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:42:17,924 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-09-20 20:42:17,925 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:42:17,977 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-20 20:42:18,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 186 transitions, 388 flow [2022-09-20 20:42:18,074 INFO L130 PetriNetUnfolder]: 10/231 cut-off events. [2022-09-20 20:42:18,074 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 20:42:18,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 231 events. 10/231 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 335 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 137. Up to 4 conditions per place. [2022-09-20 20:42:18,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 186 transitions, 388 flow [2022-09-20 20:42:18,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 172 transitions, 356 flow [2022-09-20 20:42:18,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:42:18,093 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@491f4d1f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:42:18,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-09-20 20:42:18,108 INFO L130 PetriNetUnfolder]: 1/47 cut-off events. [2022-09-20 20:42:18,108 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 20:42:18,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:18,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:18,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:18,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:18,116 INFO L85 PathProgramCache]: Analyzing trace with hash -34102460, now seen corresponding path program 1 times [2022-09-20 20:42:18,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:18,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901190453] [2022-09-20 20:42:18,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:18,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:18,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:18,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:18,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901190453] [2022-09-20 20:42:18,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901190453] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:18,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:18,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:42:18,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974137055] [2022-09-20 20:42:18,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:18,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:42:18,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:18,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:42:18,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:42:18,514 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 186 [2022-09-20 20:42:18,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 172 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:18,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:18,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 186 [2022-09-20 20:42:18,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:18,872 INFO L130 PetriNetUnfolder]: 361/944 cut-off events. [2022-09-20 20:42:18,872 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-09-20 20:42:18,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1635 conditions, 944 events. 361/944 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4914 event pairs, 216 based on Foata normal form. 20/910 useless extension candidates. Maximal degree in co-relation 1388. Up to 397 conditions per place. [2022-09-20 20:42:18,882 INFO L137 encePairwiseOnDemand]: 164/186 looper letters, 53 selfloop transitions, 17 changer transitions 1/168 dead transitions. [2022-09-20 20:42:18,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 168 transitions, 490 flow [2022-09-20 20:42:18,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 20:42:18,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 20:42:18,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1057 transitions. [2022-09-20 20:42:18,901 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6314217443249701 [2022-09-20 20:42:18,902 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1057 transitions. [2022-09-20 20:42:18,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1057 transitions. [2022-09-20 20:42:18,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:18,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1057 transitions. [2022-09-20 20:42:18,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.44444444444444) internal successors, (1057), 9 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:18,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:18,922 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:18,924 INFO L175 Difference]: Start difference. First operand has 172 places, 172 transitions, 356 flow. Second operand 9 states and 1057 transitions. [2022-09-20 20:42:18,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 168 transitions, 490 flow [2022-09-20 20:42:18,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 168 transitions, 482 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 20:42:18,935 INFO L231 Difference]: Finished difference. Result has 170 places, 161 transitions, 367 flow [2022-09-20 20:42:18,937 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=367, PETRI_PLACES=170, PETRI_TRANSITIONS=161} [2022-09-20 20:42:18,941 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, -2 predicate places. [2022-09-20 20:42:18,942 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 161 transitions, 367 flow [2022-09-20 20:42:18,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:18,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:18,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:18,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:42:18,943 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:18,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:18,944 INFO L85 PathProgramCache]: Analyzing trace with hash -888642596, now seen corresponding path program 1 times [2022-09-20 20:42:18,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:18,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165729919] [2022-09-20 20:42:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:18,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:19,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:19,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165729919] [2022-09-20 20:42:19,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165729919] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:19,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:19,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:42:19,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195171792] [2022-09-20 20:42:19,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:19,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:42:19,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:19,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:42:19,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:42:19,098 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 186 [2022-09-20 20:42:19,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 161 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:19,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:19,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 186 [2022-09-20 20:42:19,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:19,360 INFO L130 PetriNetUnfolder]: 361/951 cut-off events. [2022-09-20 20:42:19,363 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-09-20 20:42:19,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1719 conditions, 951 events. 361/951 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4997 event pairs, 120 based on Foata normal form. 1/917 useless extension candidates. Maximal degree in co-relation 856. Up to 261 conditions per place. [2022-09-20 20:42:19,374 INFO L137 encePairwiseOnDemand]: 167/186 looper letters, 61 selfloop transitions, 18 changer transitions 1/176 dead transitions. [2022-09-20 20:42:19,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 176 transitions, 559 flow [2022-09-20 20:42:19,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 20:42:19,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 20:42:19,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1171 transitions. [2022-09-20 20:42:19,376 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6295698924731182 [2022-09-20 20:42:19,376 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1171 transitions. [2022-09-20 20:42:19,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1171 transitions. [2022-09-20 20:42:19,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:19,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1171 transitions. [2022-09-20 20:42:19,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.1) internal successors, (1171), 10 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:19,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:19,382 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:19,382 INFO L175 Difference]: Start difference. First operand has 170 places, 161 transitions, 367 flow. Second operand 10 states and 1171 transitions. [2022-09-20 20:42:19,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 176 transitions, 559 flow [2022-09-20 20:42:19,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 176 transitions, 530 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-20 20:42:19,389 INFO L231 Difference]: Finished difference. Result has 171 places, 160 transitions, 378 flow [2022-09-20 20:42:19,390 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=378, PETRI_PLACES=171, PETRI_TRANSITIONS=160} [2022-09-20 20:42:19,390 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, -1 predicate places. [2022-09-20 20:42:19,391 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 160 transitions, 378 flow [2022-09-20 20:42:19,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:19,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:19,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:19,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:42:19,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:19,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:19,394 INFO L85 PathProgramCache]: Analyzing trace with hash -170107804, now seen corresponding path program 1 times [2022-09-20 20:42:19,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:19,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757963300] [2022-09-20 20:42:19,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:19,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:19,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:19,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:19,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757963300] [2022-09-20 20:42:19,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757963300] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:19,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:19,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:42:19,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310697363] [2022-09-20 20:42:19,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:19,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:42:19,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:19,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:42:19,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:42:19,540 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2022-09-20 20:42:19,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 160 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:19,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:19,541 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2022-09-20 20:42:19,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:19,909 INFO L130 PetriNetUnfolder]: 832/1911 cut-off events. [2022-09-20 20:42:19,909 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-09-20 20:42:19,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3654 conditions, 1911 events. 832/1911 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 11652 event pairs, 169 based on Foata normal form. 32/1907 useless extension candidates. Maximal degree in co-relation 948. Up to 499 conditions per place. [2022-09-20 20:42:19,919 INFO L137 encePairwiseOnDemand]: 165/186 looper letters, 100 selfloop transitions, 49 changer transitions 0/245 dead transitions. [2022-09-20 20:42:19,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 245 transitions, 862 flow [2022-09-20 20:42:19,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 20:42:19,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 20:42:19,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1540 transitions. [2022-09-20 20:42:19,922 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6368899917287014 [2022-09-20 20:42:19,922 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1540 transitions. [2022-09-20 20:42:19,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1540 transitions. [2022-09-20 20:42:19,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:19,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1540 transitions. [2022-09-20 20:42:19,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.46153846153847) internal successors, (1540), 13 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:19,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:19,930 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:19,930 INFO L175 Difference]: Start difference. First operand has 171 places, 160 transitions, 378 flow. Second operand 13 states and 1540 transitions. [2022-09-20 20:42:19,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 245 transitions, 862 flow [2022-09-20 20:42:19,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 245 transitions, 816 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-20 20:42:19,937 INFO L231 Difference]: Finished difference. Result has 183 places, 197 transitions, 648 flow [2022-09-20 20:42:19,938 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=648, PETRI_PLACES=183, PETRI_TRANSITIONS=197} [2022-09-20 20:42:19,939 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 11 predicate places. [2022-09-20 20:42:19,939 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 197 transitions, 648 flow [2022-09-20 20:42:19,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:19,940 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:19,940 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:19,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 20:42:19,941 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:19,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:19,941 INFO L85 PathProgramCache]: Analyzing trace with hash 896697388, now seen corresponding path program 1 times [2022-09-20 20:42:19,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:19,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031775537] [2022-09-20 20:42:19,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:19,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:20,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:20,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031775537] [2022-09-20 20:42:20,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031775537] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:20,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:20,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:42:20,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922450375] [2022-09-20 20:42:20,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:20,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:42:20,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:20,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:42:20,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:42:20,048 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2022-09-20 20:42:20,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 197 transitions, 648 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:20,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:20,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2022-09-20 20:42:20,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:20,482 INFO L130 PetriNetUnfolder]: 1085/2476 cut-off events. [2022-09-20 20:42:20,482 INFO L131 PetriNetUnfolder]: For 10875/10973 co-relation queries the response was YES. [2022-09-20 20:42:20,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8972 conditions, 2476 events. 1085/2476 cut-off events. For 10875/10973 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 16420 event pairs, 218 based on Foata normal form. 47/2487 useless extension candidates. Maximal degree in co-relation 7694. Up to 732 conditions per place. [2022-09-20 20:42:20,499 INFO L137 encePairwiseOnDemand]: 167/186 looper letters, 74 selfloop transitions, 48 changer transitions 69/286 dead transitions. [2022-09-20 20:42:20,499 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 286 transitions, 1732 flow [2022-09-20 20:42:20,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 20:42:20,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 20:42:20,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1307 transitions. [2022-09-20 20:42:20,502 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6388074291300098 [2022-09-20 20:42:20,502 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1307 transitions. [2022-09-20 20:42:20,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1307 transitions. [2022-09-20 20:42:20,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:20,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1307 transitions. [2022-09-20 20:42:20,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 118.81818181818181) internal successors, (1307), 11 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:20,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:20,507 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:20,507 INFO L175 Difference]: Start difference. First operand has 183 places, 197 transitions, 648 flow. Second operand 11 states and 1307 transitions. [2022-09-20 20:42:20,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 286 transitions, 1732 flow [2022-09-20 20:42:20,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 286 transitions, 1732 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 20:42:20,525 INFO L231 Difference]: Finished difference. Result has 201 places, 203 transitions, 961 flow [2022-09-20 20:42:20,525 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=961, PETRI_PLACES=201, PETRI_TRANSITIONS=203} [2022-09-20 20:42:20,526 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 29 predicate places. [2022-09-20 20:42:20,526 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 203 transitions, 961 flow [2022-09-20 20:42:20,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:20,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:20,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:20,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 20:42:20,531 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:20,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:20,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1717393044, now seen corresponding path program 1 times [2022-09-20 20:42:20,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:20,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671234904] [2022-09-20 20:42:20,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:20,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:20,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:20,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:20,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671234904] [2022-09-20 20:42:20,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671234904] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:20,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:20,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 20:42:20,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407767720] [2022-09-20 20:42:20,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:20,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 20:42:20,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:20,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 20:42:20,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-20 20:42:20,620 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 186 [2022-09-20 20:42:20,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 203 transitions, 961 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:20,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:20,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 186 [2022-09-20 20:42:20,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:20,680 INFO L130 PetriNetUnfolder]: 46/285 cut-off events. [2022-09-20 20:42:20,680 INFO L131 PetriNetUnfolder]: For 736/796 co-relation queries the response was YES. [2022-09-20 20:42:20,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 285 events. 46/285 cut-off events. For 736/796 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 950 event pairs, 10 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 629. Up to 31 conditions per place. [2022-09-20 20:42:20,682 INFO L137 encePairwiseOnDemand]: 181/186 looper letters, 19 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2022-09-20 20:42:20,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 139 transitions, 456 flow [2022-09-20 20:42:20,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 20:42:20,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 20:42:20,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 966 transitions. [2022-09-20 20:42:20,684 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8655913978494624 [2022-09-20 20:42:20,684 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 966 transitions. [2022-09-20 20:42:20,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 966 transitions. [2022-09-20 20:42:20,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:20,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 966 transitions. [2022-09-20 20:42:20,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:20,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:20,687 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:20,687 INFO L175 Difference]: Start difference. First operand has 201 places, 203 transitions, 961 flow. Second operand 6 states and 966 transitions. [2022-09-20 20:42:20,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 139 transitions, 456 flow [2022-09-20 20:42:20,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 139 transitions, 336 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-09-20 20:42:20,691 INFO L231 Difference]: Finished difference. Result has 144 places, 131 transitions, 282 flow [2022-09-20 20:42:20,691 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=144, PETRI_TRANSITIONS=131} [2022-09-20 20:42:20,693 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, -28 predicate places. [2022-09-20 20:42:20,693 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 131 transitions, 282 flow [2022-09-20 20:42:20,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:20,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:20,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:20,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 20:42:20,694 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:20,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:20,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1184178643, now seen corresponding path program 1 times [2022-09-20 20:42:20,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:20,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129395186] [2022-09-20 20:42:20,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:20,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:21,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:21,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129395186] [2022-09-20 20:42:21,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129395186] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:21,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:21,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:42:21,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163293325] [2022-09-20 20:42:21,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:21,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:42:21,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:21,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:42:21,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:42:21,275 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:42:21,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 131 transitions, 282 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:21,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:21,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:42:21,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:22,438 INFO L130 PetriNetUnfolder]: 578/1326 cut-off events. [2022-09-20 20:42:22,438 INFO L131 PetriNetUnfolder]: For 181/181 co-relation queries the response was YES. [2022-09-20 20:42:22,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2703 conditions, 1326 events. 578/1326 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6844 event pairs, 190 based on Foata normal form. 0/1277 useless extension candidates. Maximal degree in co-relation 2695. Up to 378 conditions per place. [2022-09-20 20:42:22,444 INFO L137 encePairwiseOnDemand]: 161/186 looper letters, 122 selfloop transitions, 27 changer transitions 0/212 dead transitions. [2022-09-20 20:42:22,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 212 transitions, 778 flow [2022-09-20 20:42:22,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 20:42:22,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 20:42:22,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1803 transitions. [2022-09-20 20:42:22,449 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5101867572156197 [2022-09-20 20:42:22,449 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1803 transitions. [2022-09-20 20:42:22,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1803 transitions. [2022-09-20 20:42:22,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:22,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1803 transitions. [2022-09-20 20:42:22,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 94.89473684210526) internal successors, (1803), 19 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:22,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:22,458 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:22,458 INFO L175 Difference]: Start difference. First operand has 144 places, 131 transitions, 282 flow. Second operand 19 states and 1803 transitions. [2022-09-20 20:42:22,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 212 transitions, 778 flow [2022-09-20 20:42:22,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 212 transitions, 771 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 20:42:22,462 INFO L231 Difference]: Finished difference. Result has 168 places, 147 transitions, 423 flow [2022-09-20 20:42:22,462 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=423, PETRI_PLACES=168, PETRI_TRANSITIONS=147} [2022-09-20 20:42:22,464 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, -4 predicate places. [2022-09-20 20:42:22,464 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 147 transitions, 423 flow [2022-09-20 20:42:22,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:22,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:22,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:22,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 20:42:22,465 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:22,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:22,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1988516733, now seen corresponding path program 2 times [2022-09-20 20:42:22,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:22,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634130804] [2022-09-20 20:42:22,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:22,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:22,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:22,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:22,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:22,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634130804] [2022-09-20 20:42:22,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634130804] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:22,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:22,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-09-20 20:42:22,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374472618] [2022-09-20 20:42:22,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:22,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-20 20:42:22,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:22,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-20 20:42:22,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-09-20 20:42:22,898 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-09-20 20:42:22,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 147 transitions, 423 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:22,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:22,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-09-20 20:42:22,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:23,618 INFO L130 PetriNetUnfolder]: 540/1461 cut-off events. [2022-09-20 20:42:23,618 INFO L131 PetriNetUnfolder]: For 672/698 co-relation queries the response was YES. [2022-09-20 20:42:23,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3337 conditions, 1461 events. 540/1461 cut-off events. For 672/698 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8929 event pairs, 101 based on Foata normal form. 17/1441 useless extension candidates. Maximal degree in co-relation 3320. Up to 376 conditions per place. [2022-09-20 20:42:23,624 INFO L137 encePairwiseOnDemand]: 161/186 looper letters, 114 selfloop transitions, 42 changer transitions 0/222 dead transitions. [2022-09-20 20:42:23,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 222 transitions, 1022 flow [2022-09-20 20:42:23,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-09-20 20:42:23,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-09-20 20:42:23,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1642 transitions. [2022-09-20 20:42:23,628 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.519291587602783 [2022-09-20 20:42:23,628 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1642 transitions. [2022-09-20 20:42:23,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1642 transitions. [2022-09-20 20:42:23,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:23,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1642 transitions. [2022-09-20 20:42:23,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 96.58823529411765) internal successors, (1642), 17 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:23,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 186.0) internal successors, (3348), 18 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:23,634 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 186.0) internal successors, (3348), 18 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:23,634 INFO L175 Difference]: Start difference. First operand has 168 places, 147 transitions, 423 flow. Second operand 17 states and 1642 transitions. [2022-09-20 20:42:23,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 222 transitions, 1022 flow [2022-09-20 20:42:23,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 222 transitions, 1006 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 20:42:23,639 INFO L231 Difference]: Finished difference. Result has 186 places, 174 transitions, 725 flow [2022-09-20 20:42:23,639 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=725, PETRI_PLACES=186, PETRI_TRANSITIONS=174} [2022-09-20 20:42:23,640 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 14 predicate places. [2022-09-20 20:42:23,640 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 174 transitions, 725 flow [2022-09-20 20:42:23,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:23,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:23,640 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:23,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 20:42:23,641 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:23,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:23,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1034154241, now seen corresponding path program 3 times [2022-09-20 20:42:23,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:23,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672520423] [2022-09-20 20:42:23,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:23,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:23,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:24,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:24,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:24,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672520423] [2022-09-20 20:42:24,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672520423] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:24,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:24,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-09-20 20:42:24,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277872072] [2022-09-20 20:42:24,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:24,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-09-20 20:42:24,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:24,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-09-20 20:42:24,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-09-20 20:42:24,022 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:42:24,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 174 transitions, 725 flow. Second operand has 17 states, 17 states have (on average 90.58823529411765) internal successors, (1540), 17 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:24,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:24,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:42:24,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:25,612 INFO L130 PetriNetUnfolder]: 1012/2619 cut-off events. [2022-09-20 20:42:25,613 INFO L131 PetriNetUnfolder]: For 2473/2473 co-relation queries the response was YES. [2022-09-20 20:42:25,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6899 conditions, 2619 events. 1012/2619 cut-off events. For 2473/2473 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 18355 event pairs, 208 based on Foata normal form. 1/2553 useless extension candidates. Maximal degree in co-relation 6874. Up to 603 conditions per place. [2022-09-20 20:42:25,629 INFO L137 encePairwiseOnDemand]: 162/186 looper letters, 196 selfloop transitions, 69 changer transitions 0/328 dead transitions. [2022-09-20 20:42:25,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 328 transitions, 1982 flow [2022-09-20 20:42:25,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-09-20 20:42:25,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-09-20 20:42:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2725 transitions. [2022-09-20 20:42:25,638 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5051909529106414 [2022-09-20 20:42:25,638 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2725 transitions. [2022-09-20 20:42:25,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2725 transitions. [2022-09-20 20:42:25,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:25,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2725 transitions. [2022-09-20 20:42:25,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 93.96551724137932) internal successors, (2725), 29 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:25,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:25,651 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:25,651 INFO L175 Difference]: Start difference. First operand has 186 places, 174 transitions, 725 flow. Second operand 29 states and 2725 transitions. [2022-09-20 20:42:25,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 328 transitions, 1982 flow [2022-09-20 20:42:25,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 328 transitions, 1957 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 20:42:25,663 INFO L231 Difference]: Finished difference. Result has 222 places, 214 transitions, 1217 flow [2022-09-20 20:42:25,663 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1217, PETRI_PLACES=222, PETRI_TRANSITIONS=214} [2022-09-20 20:42:25,663 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 50 predicate places. [2022-09-20 20:42:25,663 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 214 transitions, 1217 flow [2022-09-20 20:42:25,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 90.58823529411765) internal successors, (1540), 17 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:25,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:25,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:25,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 20:42:25,664 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:25,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:25,665 INFO L85 PathProgramCache]: Analyzing trace with hash -890503641, now seen corresponding path program 4 times [2022-09-20 20:42:25,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:25,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315467534] [2022-09-20 20:42:25,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:25,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:25,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:25,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:25,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315467534] [2022-09-20 20:42:25,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315467534] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:25,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:25,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-09-20 20:42:25,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60269270] [2022-09-20 20:42:25,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:25,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-20 20:42:25,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:25,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-20 20:42:25,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-09-20 20:42:25,975 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-09-20 20:42:25,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 214 transitions, 1217 flow. Second operand has 16 states, 16 states have (on average 92.6875) internal successors, (1483), 16 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:25,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:25,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-09-20 20:42:25,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:26,873 INFO L130 PetriNetUnfolder]: 829/2406 cut-off events. [2022-09-20 20:42:26,873 INFO L131 PetriNetUnfolder]: For 5144/5167 co-relation queries the response was YES. [2022-09-20 20:42:26,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7100 conditions, 2406 events. 829/2406 cut-off events. For 5144/5167 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 17537 event pairs, 410 based on Foata normal form. 16/2356 useless extension candidates. Maximal degree in co-relation 7060. Up to 927 conditions per place. [2022-09-20 20:42:26,888 INFO L137 encePairwiseOnDemand]: 162/186 looper letters, 143 selfloop transitions, 64 changer transitions 0/280 dead transitions. [2022-09-20 20:42:26,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 280 transitions, 2021 flow [2022-09-20 20:42:26,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-09-20 20:42:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-09-20 20:42:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2173 transitions. [2022-09-20 20:42:26,891 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.507947639083684 [2022-09-20 20:42:26,891 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2173 transitions. [2022-09-20 20:42:26,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2173 transitions. [2022-09-20 20:42:26,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:26,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2173 transitions. [2022-09-20 20:42:26,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 94.47826086956522) internal successors, (2173), 23 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:26,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 186.0) internal successors, (4464), 24 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:26,906 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 186.0) internal successors, (4464), 24 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:26,906 INFO L175 Difference]: Start difference. First operand has 222 places, 214 transitions, 1217 flow. Second operand 23 states and 2173 transitions. [2022-09-20 20:42:26,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 280 transitions, 2021 flow [2022-09-20 20:42:26,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 280 transitions, 1939 flow, removed 25 selfloop flow, removed 5 redundant places. [2022-09-20 20:42:26,937 INFO L231 Difference]: Finished difference. Result has 249 places, 231 transitions, 1506 flow [2022-09-20 20:42:26,938 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1506, PETRI_PLACES=249, PETRI_TRANSITIONS=231} [2022-09-20 20:42:26,938 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 77 predicate places. [2022-09-20 20:42:26,939 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 231 transitions, 1506 flow [2022-09-20 20:42:26,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 92.6875) internal successors, (1483), 16 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:26,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:26,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:26,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 20:42:26,941 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:26,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:26,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2145030983, now seen corresponding path program 5 times [2022-09-20 20:42:26,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:26,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313313165] [2022-09-20 20:42:26,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:26,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:27,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:27,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313313165] [2022-09-20 20:42:27,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313313165] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:27,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:27,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-09-20 20:42:27,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312892242] [2022-09-20 20:42:27,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:27,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-20 20:42:27,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:27,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-20 20:42:27,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-09-20 20:42:27,213 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-09-20 20:42:27,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 231 transitions, 1506 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:27,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:27,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-09-20 20:42:27,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:28,119 INFO L130 PetriNetUnfolder]: 834/2481 cut-off events. [2022-09-20 20:42:28,119 INFO L131 PetriNetUnfolder]: For 7664/7738 co-relation queries the response was YES. [2022-09-20 20:42:28,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7682 conditions, 2481 events. 834/2481 cut-off events. For 7664/7738 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 18442 event pairs, 112 based on Foata normal form. 49/2485 useless extension candidates. Maximal degree in co-relation 7631. Up to 538 conditions per place. [2022-09-20 20:42:28,134 INFO L137 encePairwiseOnDemand]: 161/186 looper letters, 162 selfloop transitions, 94 changer transitions 0/329 dead transitions. [2022-09-20 20:42:28,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 329 transitions, 2657 flow [2022-09-20 20:42:28,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 20:42:28,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 20:42:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1847 transitions. [2022-09-20 20:42:28,136 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5226372382569326 [2022-09-20 20:42:28,136 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1847 transitions. [2022-09-20 20:42:28,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1847 transitions. [2022-09-20 20:42:28,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:28,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1847 transitions. [2022-09-20 20:42:28,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 97.21052631578948) internal successors, (1847), 19 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:28,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:28,141 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:28,141 INFO L175 Difference]: Start difference. First operand has 249 places, 231 transitions, 1506 flow. Second operand 19 states and 1847 transitions. [2022-09-20 20:42:28,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 329 transitions, 2657 flow [2022-09-20 20:42:28,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 329 transitions, 2548 flow, removed 29 selfloop flow, removed 8 redundant places. [2022-09-20 20:42:28,166 INFO L231 Difference]: Finished difference. Result has 266 places, 259 transitions, 2054 flow [2022-09-20 20:42:28,167 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2054, PETRI_PLACES=266, PETRI_TRANSITIONS=259} [2022-09-20 20:42:28,167 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 94 predicate places. [2022-09-20 20:42:28,167 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 259 transitions, 2054 flow [2022-09-20 20:42:28,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:28,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:28,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:28,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 20:42:28,168 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:28,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:28,168 INFO L85 PathProgramCache]: Analyzing trace with hash -743416315, now seen corresponding path program 6 times [2022-09-20 20:42:28,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:28,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180728847] [2022-09-20 20:42:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:28,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:28,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:28,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180728847] [2022-09-20 20:42:28,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180728847] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:28,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:28,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:42:28,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972782509] [2022-09-20 20:42:28,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:28,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:42:28,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:28,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:42:28,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:42:28,524 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:42:28,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 259 transitions, 2054 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:28,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:28,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:42:28,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:30,051 INFO L130 PetriNetUnfolder]: 1333/3626 cut-off events. [2022-09-20 20:42:30,052 INFO L131 PetriNetUnfolder]: For 13151/13177 co-relation queries the response was YES. [2022-09-20 20:42:30,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12178 conditions, 3626 events. 1333/3626 cut-off events. For 13151/13177 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 28445 event pairs, 406 based on Foata normal form. 25/3553 useless extension candidates. Maximal degree in co-relation 12120. Up to 1515 conditions per place. [2022-09-20 20:42:30,076 INFO L137 encePairwiseOnDemand]: 160/186 looper letters, 216 selfloop transitions, 97 changer transitions 0/376 dead transitions. [2022-09-20 20:42:30,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 376 transitions, 3663 flow [2022-09-20 20:42:30,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 20:42:30,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 20:42:30,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1811 transitions. [2022-09-20 20:42:30,079 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.512450481041313 [2022-09-20 20:42:30,079 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1811 transitions. [2022-09-20 20:42:30,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1811 transitions. [2022-09-20 20:42:30,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:30,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1811 transitions. [2022-09-20 20:42:30,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.3157894736842) internal successors, (1811), 19 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:30,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:30,085 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:30,085 INFO L175 Difference]: Start difference. First operand has 266 places, 259 transitions, 2054 flow. Second operand 19 states and 1811 transitions. [2022-09-20 20:42:30,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 376 transitions, 3663 flow [2022-09-20 20:42:30,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 376 transitions, 3544 flow, removed 41 selfloop flow, removed 6 redundant places. [2022-09-20 20:42:30,142 INFO L231 Difference]: Finished difference. Result has 288 places, 297 transitions, 2848 flow [2022-09-20 20:42:30,143 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2848, PETRI_PLACES=288, PETRI_TRANSITIONS=297} [2022-09-20 20:42:30,143 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 116 predicate places. [2022-09-20 20:42:30,143 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 297 transitions, 2848 flow [2022-09-20 20:42:30,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:30,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:30,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:30,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-20 20:42:30,144 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:30,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:30,145 INFO L85 PathProgramCache]: Analyzing trace with hash -866884165, now seen corresponding path program 7 times [2022-09-20 20:42:30,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:30,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412437893] [2022-09-20 20:42:30,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:30,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:30,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:30,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:30,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412437893] [2022-09-20 20:42:30,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412437893] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:30,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:30,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:42:30,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069550662] [2022-09-20 20:42:30,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:30,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:42:30,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:30,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:42:30,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:42:30,552 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:42:30,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 297 transitions, 2848 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:30,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:30,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:42:30,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:32,016 INFO L130 PetriNetUnfolder]: 1331/3644 cut-off events. [2022-09-20 20:42:32,017 INFO L131 PetriNetUnfolder]: For 15282/15294 co-relation queries the response was YES. [2022-09-20 20:42:32,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12880 conditions, 3644 events. 1331/3644 cut-off events. For 15282/15294 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 28766 event pairs, 395 based on Foata normal form. 11/3561 useless extension candidates. Maximal degree in co-relation 12812. Up to 1515 conditions per place. [2022-09-20 20:42:32,040 INFO L137 encePairwiseOnDemand]: 160/186 looper letters, 228 selfloop transitions, 111 changer transitions 0/402 dead transitions. [2022-09-20 20:42:32,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 402 transitions, 4300 flow [2022-09-20 20:42:32,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 20:42:32,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 20:42:32,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1906 transitions. [2022-09-20 20:42:32,045 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5123655913978494 [2022-09-20 20:42:32,045 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1906 transitions. [2022-09-20 20:42:32,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1906 transitions. [2022-09-20 20:42:32,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:32,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1906 transitions. [2022-09-20 20:42:32,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.3) internal successors, (1906), 20 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:32,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:32,051 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:32,051 INFO L175 Difference]: Start difference. First operand has 288 places, 297 transitions, 2848 flow. Second operand 20 states and 1906 transitions. [2022-09-20 20:42:32,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 402 transitions, 4300 flow [2022-09-20 20:42:32,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 402 transitions, 4198 flow, removed 33 selfloop flow, removed 6 redundant places. [2022-09-20 20:42:32,111 INFO L231 Difference]: Finished difference. Result has 309 places, 317 transitions, 3406 flow [2022-09-20 20:42:32,111 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=2748, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3406, PETRI_PLACES=309, PETRI_TRANSITIONS=317} [2022-09-20 20:42:32,112 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 137 predicate places. [2022-09-20 20:42:32,112 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 317 transitions, 3406 flow [2022-09-20 20:42:32,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:32,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:32,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:32,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-20 20:42:32,113 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:32,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:32,113 INFO L85 PathProgramCache]: Analyzing trace with hash 751849417, now seen corresponding path program 8 times [2022-09-20 20:42:32,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:32,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705208776] [2022-09-20 20:42:32,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:32,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:32,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:32,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:32,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705208776] [2022-09-20 20:42:32,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705208776] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:32,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:32,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:42:32,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149017054] [2022-09-20 20:42:32,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:32,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:42:32,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:32,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:42:32,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:42:32,475 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:42:32,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 317 transitions, 3406 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:32,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:32,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:42:32,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:34,043 INFO L130 PetriNetUnfolder]: 1670/4724 cut-off events. [2022-09-20 20:42:34,043 INFO L131 PetriNetUnfolder]: For 21805/21805 co-relation queries the response was YES. [2022-09-20 20:42:34,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16754 conditions, 4724 events. 1670/4724 cut-off events. For 21805/21805 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 39554 event pairs, 786 based on Foata normal form. 1/4604 useless extension candidates. Maximal degree in co-relation 16678. Up to 1677 conditions per place. [2022-09-20 20:42:34,108 INFO L137 encePairwiseOnDemand]: 163/186 looper letters, 260 selfloop transitions, 114 changer transitions 0/437 dead transitions. [2022-09-20 20:42:34,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 437 transitions, 5264 flow [2022-09-20 20:42:34,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 20:42:34,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 20:42:34,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1886 transitions. [2022-09-20 20:42:34,112 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5069892473118279 [2022-09-20 20:42:34,112 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1886 transitions. [2022-09-20 20:42:34,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1886 transitions. [2022-09-20 20:42:34,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:34,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1886 transitions. [2022-09-20 20:42:34,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.3) internal successors, (1886), 20 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:34,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:34,118 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:34,118 INFO L175 Difference]: Start difference. First operand has 309 places, 317 transitions, 3406 flow. Second operand 20 states and 1886 transitions. [2022-09-20 20:42:34,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 437 transitions, 5264 flow [2022-09-20 20:42:34,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 437 transitions, 5126 flow, removed 22 selfloop flow, removed 8 redundant places. [2022-09-20 20:42:34,216 INFO L231 Difference]: Finished difference. Result has 331 places, 353 transitions, 4133 flow [2022-09-20 20:42:34,216 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=3299, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4133, PETRI_PLACES=331, PETRI_TRANSITIONS=353} [2022-09-20 20:42:34,217 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 159 predicate places. [2022-09-20 20:42:34,217 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 353 transitions, 4133 flow [2022-09-20 20:42:34,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:34,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:34,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:34,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-20 20:42:34,218 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:34,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:34,218 INFO L85 PathProgramCache]: Analyzing trace with hash 2046559213, now seen corresponding path program 9 times [2022-09-20 20:42:34,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:34,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432451208] [2022-09-20 20:42:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:34,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:34,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:34,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432451208] [2022-09-20 20:42:34,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432451208] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:34,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:34,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:42:34,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120519762] [2022-09-20 20:42:34,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:34,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:42:34,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:34,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:42:34,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:42:34,601 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:42:34,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 353 transitions, 4133 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:34,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:34,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:42:34,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:36,714 INFO L130 PetriNetUnfolder]: 1965/5566 cut-off events. [2022-09-20 20:42:36,714 INFO L131 PetriNetUnfolder]: For 27391/27413 co-relation queries the response was YES. [2022-09-20 20:42:36,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20229 conditions, 5566 events. 1965/5566 cut-off events. For 27391/27413 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 49745 event pairs, 596 based on Foata normal form. 11/5452 useless extension candidates. Maximal degree in co-relation 20141. Up to 2346 conditions per place. [2022-09-20 20:42:36,760 INFO L137 encePairwiseOnDemand]: 162/186 looper letters, 297 selfloop transitions, 136 changer transitions 0/496 dead transitions. [2022-09-20 20:42:36,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 496 transitions, 6556 flow [2022-09-20 20:42:36,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 20:42:36,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 20:42:36,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1989 transitions. [2022-09-20 20:42:36,763 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5092165898617511 [2022-09-20 20:42:36,763 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1989 transitions. [2022-09-20 20:42:36,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1989 transitions. [2022-09-20 20:42:36,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:36,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1989 transitions. [2022-09-20 20:42:36,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.71428571428571) internal successors, (1989), 21 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:36,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:36,769 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:36,769 INFO L175 Difference]: Start difference. First operand has 331 places, 353 transitions, 4133 flow. Second operand 21 states and 1989 transitions. [2022-09-20 20:42:36,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 496 transitions, 6556 flow [2022-09-20 20:42:36,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 496 transitions, 6481 flow, removed 31 selfloop flow, removed 5 redundant places. [2022-09-20 20:42:36,931 INFO L231 Difference]: Finished difference. Result has 357 places, 392 transitions, 5274 flow [2022-09-20 20:42:36,931 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=4058, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5274, PETRI_PLACES=357, PETRI_TRANSITIONS=392} [2022-09-20 20:42:36,932 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 185 predicate places. [2022-09-20 20:42:36,932 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 392 transitions, 5274 flow [2022-09-20 20:42:36,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:36,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:36,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:36,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-20 20:42:36,933 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:36,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:36,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1269818007, now seen corresponding path program 10 times [2022-09-20 20:42:36,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:36,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672705705] [2022-09-20 20:42:36,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:36,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:37,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:37,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:37,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672705705] [2022-09-20 20:42:37,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672705705] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:37,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:37,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:42:37,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572253109] [2022-09-20 20:42:37,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:37,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:42:37,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:37,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:42:37,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:42:37,351 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:42:37,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 392 transitions, 5274 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:37,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:37,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:42:37,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:39,276 INFO L130 PetriNetUnfolder]: 1958/5730 cut-off events. [2022-09-20 20:42:39,279 INFO L131 PetriNetUnfolder]: For 34655/34677 co-relation queries the response was YES. [2022-09-20 20:42:39,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21593 conditions, 5730 events. 1958/5730 cut-off events. For 34655/34677 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 51679 event pairs, 716 based on Foata normal form. 11/5616 useless extension candidates. Maximal degree in co-relation 21495. Up to 1735 conditions per place. [2022-09-20 20:42:39,355 INFO L137 encePairwiseOnDemand]: 162/186 looper letters, 342 selfloop transitions, 157 changer transitions 0/562 dead transitions. [2022-09-20 20:42:39,355 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 562 transitions, 8277 flow [2022-09-20 20:42:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 20:42:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 20:42:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1995 transitions. [2022-09-20 20:42:39,369 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.510752688172043 [2022-09-20 20:42:39,369 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1995 transitions. [2022-09-20 20:42:39,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1995 transitions. [2022-09-20 20:42:39,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:39,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1995 transitions. [2022-09-20 20:42:39,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.0) internal successors, (1995), 21 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:39,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:39,375 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:39,375 INFO L175 Difference]: Start difference. First operand has 357 places, 392 transitions, 5274 flow. Second operand 21 states and 1995 transitions. [2022-09-20 20:42:39,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 562 transitions, 8277 flow [2022-09-20 20:42:39,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 562 transitions, 8134 flow, removed 46 selfloop flow, removed 6 redundant places. [2022-09-20 20:42:39,592 INFO L231 Difference]: Finished difference. Result has 378 places, 434 transitions, 6575 flow [2022-09-20 20:42:39,592 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=5133, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6575, PETRI_PLACES=378, PETRI_TRANSITIONS=434} [2022-09-20 20:42:39,593 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 206 predicate places. [2022-09-20 20:42:39,593 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 434 transitions, 6575 flow [2022-09-20 20:42:39,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:39,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:39,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:39,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-20 20:42:39,594 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:39,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:39,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1348293693, now seen corresponding path program 11 times [2022-09-20 20:42:39,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:39,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643005744] [2022-09-20 20:42:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:39,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:40,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:40,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:40,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643005744] [2022-09-20 20:42:40,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643005744] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:40,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:40,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:42:40,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076510556] [2022-09-20 20:42:40,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:40,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:42:40,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:40,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:42:40,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:42:40,045 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:42:40,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 434 transitions, 6575 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:40,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:40,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:42:40,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:43,192 INFO L130 PetriNetUnfolder]: 2797/8234 cut-off events. [2022-09-20 20:42:43,193 INFO L131 PetriNetUnfolder]: For 51556/51616 co-relation queries the response was YES. [2022-09-20 20:42:43,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30786 conditions, 8234 events. 2797/8234 cut-off events. For 51556/51616 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 81651 event pairs, 864 based on Foata normal form. 30/8125 useless extension candidates. Maximal degree in co-relation 30680. Up to 2602 conditions per place. [2022-09-20 20:42:43,268 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 333 selfloop transitions, 232 changer transitions 0/628 dead transitions. [2022-09-20 20:42:43,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 628 transitions, 10014 flow [2022-09-20 20:42:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-09-20 20:42:43,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-09-20 20:42:43,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2466 transitions. [2022-09-20 20:42:43,270 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5099255583126551 [2022-09-20 20:42:43,270 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2466 transitions. [2022-09-20 20:42:43,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2466 transitions. [2022-09-20 20:42:43,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:43,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2466 transitions. [2022-09-20 20:42:43,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 94.84615384615384) internal successors, (2466), 26 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:43,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:43,277 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:43,277 INFO L175 Difference]: Start difference. First operand has 378 places, 434 transitions, 6575 flow. Second operand 26 states and 2466 transitions. [2022-09-20 20:42:43,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 628 transitions, 10014 flow [2022-09-20 20:42:43,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 628 transitions, 9782 flow, removed 75 selfloop flow, removed 12 redundant places. [2022-09-20 20:42:43,613 INFO L231 Difference]: Finished difference. Result has 404 places, 521 transitions, 8906 flow [2022-09-20 20:42:43,613 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=6373, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8906, PETRI_PLACES=404, PETRI_TRANSITIONS=521} [2022-09-20 20:42:43,613 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 232 predicate places. [2022-09-20 20:42:43,614 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 521 transitions, 8906 flow [2022-09-20 20:42:43,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:43,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:43,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:43,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-09-20 20:42:43,614 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:43,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:43,615 INFO L85 PathProgramCache]: Analyzing trace with hash -781002157, now seen corresponding path program 12 times [2022-09-20 20:42:43,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:43,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021189588] [2022-09-20 20:42:43,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:43,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:43,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:43,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:43,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021189588] [2022-09-20 20:42:43,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021189588] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:43,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:43,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:42:43,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93920633] [2022-09-20 20:42:43,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:43,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:42:43,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:43,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:42:43,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:42:43,998 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:42:43,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 521 transitions, 8906 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:43,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:43,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:42:43,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:47,022 INFO L130 PetriNetUnfolder]: 2804/8181 cut-off events. [2022-09-20 20:42:47,022 INFO L131 PetriNetUnfolder]: For 64913/64951 co-relation queries the response was YES. [2022-09-20 20:42:47,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33137 conditions, 8181 events. 2804/8181 cut-off events. For 64913/64951 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 81022 event pairs, 1053 based on Foata normal form. 23/8037 useless extension candidates. Maximal degree in co-relation 33025. Up to 2602 conditions per place. [2022-09-20 20:42:47,106 INFO L137 encePairwiseOnDemand]: 160/186 looper letters, 367 selfloop transitions, 201 changer transitions 0/631 dead transitions. [2022-09-20 20:42:47,107 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 631 transitions, 11154 flow [2022-09-20 20:42:47,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 20:42:47,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 20:42:47,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1823 transitions. [2022-09-20 20:42:47,110 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5158460667798529 [2022-09-20 20:42:47,110 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1823 transitions. [2022-09-20 20:42:47,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1823 transitions. [2022-09-20 20:42:47,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:47,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1823 transitions. [2022-09-20 20:42:47,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.94736842105263) internal successors, (1823), 19 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:47,115 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:47,115 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:47,115 INFO L175 Difference]: Start difference. First operand has 404 places, 521 transitions, 8906 flow. Second operand 19 states and 1823 transitions. [2022-09-20 20:42:47,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 631 transitions, 11154 flow [2022-09-20 20:42:47,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 631 transitions, 10921 flow, removed 105 selfloop flow, removed 5 redundant places. [2022-09-20 20:42:47,587 INFO L231 Difference]: Finished difference. Result has 427 places, 542 transitions, 9829 flow [2022-09-20 20:42:47,587 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=8681, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9829, PETRI_PLACES=427, PETRI_TRANSITIONS=542} [2022-09-20 20:42:47,588 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 255 predicate places. [2022-09-20 20:42:47,588 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 542 transitions, 9829 flow [2022-09-20 20:42:47,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:47,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:47,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:47,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-20 20:42:47,589 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:47,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:47,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1357221431, now seen corresponding path program 13 times [2022-09-20 20:42:47,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:47,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429189017] [2022-09-20 20:42:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:47,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:48,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:48,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429189017] [2022-09-20 20:42:48,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429189017] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:48,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:48,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:42:48,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543336275] [2022-09-20 20:42:48,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:48,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:42:48,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:48,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:42:48,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:42:48,076 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:42:48,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 542 transitions, 9829 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:48,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:48,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:42:48,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:52,020 INFO L130 PetriNetUnfolder]: 2802/8269 cut-off events. [2022-09-20 20:42:52,020 INFO L131 PetriNetUnfolder]: For 71117/71155 co-relation queries the response was YES. [2022-09-20 20:42:52,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33996 conditions, 8269 events. 2802/8269 cut-off events. For 71117/71155 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 82413 event pairs, 804 based on Foata normal form. 23/8141 useless extension candidates. Maximal degree in co-relation 33874. Up to 2602 conditions per place. [2022-09-20 20:42:52,108 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 354 selfloop transitions, 258 changer transitions 0/675 dead transitions. [2022-09-20 20:42:52,108 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 675 transitions, 12210 flow [2022-09-20 20:42:52,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-09-20 20:42:52,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-09-20 20:42:52,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2561 transitions. [2022-09-20 20:42:52,110 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5099561927518916 [2022-09-20 20:42:52,110 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2561 transitions. [2022-09-20 20:42:52,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2561 transitions. [2022-09-20 20:42:52,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:52,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2561 transitions. [2022-09-20 20:42:52,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 94.85185185185185) internal successors, (2561), 27 states have internal predecessors, (2561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:52,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 186.0) internal successors, (5208), 28 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:52,117 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 186.0) internal successors, (5208), 28 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:52,117 INFO L175 Difference]: Start difference. First operand has 427 places, 542 transitions, 9829 flow. Second operand 27 states and 2561 transitions. [2022-09-20 20:42:52,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 675 transitions, 12210 flow [2022-09-20 20:42:52,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 675 transitions, 11920 flow, removed 82 selfloop flow, removed 7 redundant places. [2022-09-20 20:42:52,615 INFO L231 Difference]: Finished difference. Result has 454 places, 565 transitions, 10831 flow [2022-09-20 20:42:52,615 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=9539, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=10831, PETRI_PLACES=454, PETRI_TRANSITIONS=565} [2022-09-20 20:42:52,616 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 282 predicate places. [2022-09-20 20:42:52,616 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 565 transitions, 10831 flow [2022-09-20 20:42:52,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:52,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:52,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:52,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-09-20 20:42:52,617 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:52,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:52,617 INFO L85 PathProgramCache]: Analyzing trace with hash -155991445, now seen corresponding path program 14 times [2022-09-20 20:42:52,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:52,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702272847] [2022-09-20 20:42:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:52,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:53,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:53,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702272847] [2022-09-20 20:42:53,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702272847] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:53,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:53,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-09-20 20:42:53,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129916245] [2022-09-20 20:42:53,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:53,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-20 20:42:53,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:53,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-20 20:42:53,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2022-09-20 20:42:53,126 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 186 [2022-09-20 20:42:53,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 565 transitions, 10831 flow. Second operand has 23 states, 23 states have (on average 88.69565217391305) internal successors, (2040), 23 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:53,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:53,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 186 [2022-09-20 20:42:53,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:42:56,865 INFO L130 PetriNetUnfolder]: 2800/8306 cut-off events. [2022-09-20 20:42:56,865 INFO L131 PetriNetUnfolder]: For 78594/78654 co-relation queries the response was YES. [2022-09-20 20:42:56,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34982 conditions, 8306 events. 2800/8306 cut-off events. For 78594/78654 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 82580 event pairs, 1123 based on Foata normal form. 29/8172 useless extension candidates. Maximal degree in co-relation 34853. Up to 2602 conditions per place. [2022-09-20 20:42:56,950 INFO L137 encePairwiseOnDemand]: 154/186 looper letters, 390 selfloop transitions, 227 changer transitions 0/679 dead transitions. [2022-09-20 20:42:56,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 679 transitions, 13220 flow [2022-09-20 20:42:56,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-09-20 20:42:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-09-20 20:42:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2673 transitions. [2022-09-20 20:42:56,953 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4955506117908788 [2022-09-20 20:42:56,953 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2673 transitions. [2022-09-20 20:42:56,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2673 transitions. [2022-09-20 20:42:56,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:42:56,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2673 transitions. [2022-09-20 20:42:56,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 92.17241379310344) internal successors, (2673), 29 states have internal predecessors, (2673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:56,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:56,959 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:56,959 INFO L175 Difference]: Start difference. First operand has 454 places, 565 transitions, 10831 flow. Second operand 29 states and 2673 transitions. [2022-09-20 20:42:56,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 679 transitions, 13220 flow [2022-09-20 20:42:57,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 679 transitions, 12879 flow, removed 71 selfloop flow, removed 13 redundant places. [2022-09-20 20:42:57,426 INFO L231 Difference]: Finished difference. Result has 477 places, 585 transitions, 11709 flow [2022-09-20 20:42:57,426 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=10505, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=565, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11709, PETRI_PLACES=477, PETRI_TRANSITIONS=585} [2022-09-20 20:42:57,426 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 305 predicate places. [2022-09-20 20:42:57,426 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 585 transitions, 11709 flow [2022-09-20 20:42:57,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 88.69565217391305) internal successors, (2040), 23 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:57,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:42:57,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:42:57,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-09-20 20:42:57,427 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:42:57,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:42:57,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1503115955, now seen corresponding path program 15 times [2022-09-20 20:42:57,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:42:57,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985046828] [2022-09-20 20:42:57,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:42:57,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:42:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:42:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:42:57,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:42:57,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985046828] [2022-09-20 20:42:57,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985046828] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:42:57,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:42:57,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 20:42:57,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196633833] [2022-09-20 20:42:57,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:42:57,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 20:42:57,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:42:57,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 20:42:57,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-09-20 20:42:57,861 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:42:57,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 585 transitions, 11709 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:42:57,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:42:57,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:42:57,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:01,070 INFO L130 PetriNetUnfolder]: 2826/8458 cut-off events. [2022-09-20 20:43:01,070 INFO L131 PetriNetUnfolder]: For 85432/85470 co-relation queries the response was YES. [2022-09-20 20:43:01,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35835 conditions, 8458 events. 2826/8458 cut-off events. For 85432/85470 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 85012 event pairs, 792 based on Foata normal form. 23/8328 useless extension candidates. Maximal degree in co-relation 35698. Up to 2602 conditions per place. [2022-09-20 20:43:01,167 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 370 selfloop transitions, 283 changer transitions 0/716 dead transitions. [2022-09-20 20:43:01,167 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 716 transitions, 14585 flow [2022-09-20 20:43:01,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 20:43:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 20:43:01,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2017 transitions. [2022-09-20 20:43:01,170 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5163850486431132 [2022-09-20 20:43:01,170 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2017 transitions. [2022-09-20 20:43:01,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2017 transitions. [2022-09-20 20:43:01,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:01,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2017 transitions. [2022-09-20 20:43:01,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 96.04761904761905) internal successors, (2017), 21 states have internal predecessors, (2017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:01,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:01,174 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:01,174 INFO L175 Difference]: Start difference. First operand has 477 places, 585 transitions, 11709 flow. Second operand 21 states and 2017 transitions. [2022-09-20 20:43:01,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 716 transitions, 14585 flow [2022-09-20 20:43:01,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 716 transitions, 14293 flow, removed 81 selfloop flow, removed 15 redundant places. [2022-09-20 20:43:01,755 INFO L231 Difference]: Finished difference. Result has 490 places, 617 transitions, 13191 flow [2022-09-20 20:43:01,755 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=11433, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=13191, PETRI_PLACES=490, PETRI_TRANSITIONS=617} [2022-09-20 20:43:01,755 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 318 predicate places. [2022-09-20 20:43:01,756 INFO L495 AbstractCegarLoop]: Abstraction has has 490 places, 617 transitions, 13191 flow [2022-09-20 20:43:01,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:01,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:01,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:43:01,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-09-20 20:43:01,756 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:01,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:01,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2103788525, now seen corresponding path program 16 times [2022-09-20 20:43:01,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:01,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173846635] [2022-09-20 20:43:01,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:01,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:02,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:02,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173846635] [2022-09-20 20:43:02,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173846635] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:02,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:02,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 20:43:02,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726184765] [2022-09-20 20:43:02,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:02,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 20:43:02,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:02,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 20:43:02,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-09-20 20:43:02,211 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:43:02,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 617 transitions, 13191 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:02,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:02,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:43:02,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:05,631 INFO L130 PetriNetUnfolder]: 2826/8404 cut-off events. [2022-09-20 20:43:05,631 INFO L131 PetriNetUnfolder]: For 96837/96875 co-relation queries the response was YES. [2022-09-20 20:43:05,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37149 conditions, 8404 events. 2826/8404 cut-off events. For 96837/96875 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 83992 event pairs, 1084 based on Foata normal form. 23/8257 useless extension candidates. Maximal degree in co-relation 37004. Up to 2602 conditions per place. [2022-09-20 20:43:05,725 INFO L137 encePairwiseOnDemand]: 162/186 looper letters, 400 selfloop transitions, 232 changer transitions 0/695 dead transitions. [2022-09-20 20:43:05,725 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 695 transitions, 15034 flow [2022-09-20 20:43:05,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 20:43:05,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 20:43:05,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1992 transitions. [2022-09-20 20:43:05,727 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5099846390168971 [2022-09-20 20:43:05,727 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1992 transitions. [2022-09-20 20:43:05,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1992 transitions. [2022-09-20 20:43:05,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:05,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1992 transitions. [2022-09-20 20:43:05,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.85714285714286) internal successors, (1992), 21 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:05,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:05,796 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:05,796 INFO L175 Difference]: Start difference. First operand has 490 places, 617 transitions, 13191 flow. Second operand 21 states and 1992 transitions. [2022-09-20 20:43:05,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 695 transitions, 15034 flow [2022-09-20 20:43:06,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 503 places, 695 transitions, 14888 flow, removed 37 selfloop flow, removed 7 redundant places. [2022-09-20 20:43:06,497 INFO L231 Difference]: Finished difference. Result has 509 places, 623 transitions, 13729 flow [2022-09-20 20:43:06,498 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=13047, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=617, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=13729, PETRI_PLACES=509, PETRI_TRANSITIONS=623} [2022-09-20 20:43:06,498 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 337 predicate places. [2022-09-20 20:43:06,498 INFO L495 AbstractCegarLoop]: Abstraction has has 509 places, 623 transitions, 13729 flow [2022-09-20 20:43:06,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:06,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:06,499 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:43:06,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-09-20 20:43:06,499 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:06,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:06,499 INFO L85 PathProgramCache]: Analyzing trace with hash 324121191, now seen corresponding path program 17 times [2022-09-20 20:43:06,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:06,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648518090] [2022-09-20 20:43:06,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:06,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:06,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:06,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648518090] [2022-09-20 20:43:06,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648518090] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:06,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:06,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:43:06,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047078220] [2022-09-20 20:43:06,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:06,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:43:06,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:06,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:43:06,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:43:06,841 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:43:06,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 623 transitions, 13729 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:06,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:06,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:43:06,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:10,174 INFO L130 PetriNetUnfolder]: 2824/8591 cut-off events. [2022-09-20 20:43:10,174 INFO L131 PetriNetUnfolder]: For 108696/108724 co-relation queries the response was YES. [2022-09-20 20:43:10,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38296 conditions, 8591 events. 2824/8591 cut-off events. For 108696/108724 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 85786 event pairs, 1431 based on Foata normal form. 19/8420 useless extension candidates. Maximal degree in co-relation 38144. Up to 2851 conditions per place. [2022-09-20 20:43:10,276 INFO L137 encePairwiseOnDemand]: 162/186 looper letters, 487 selfloop transitions, 224 changer transitions 0/774 dead transitions. [2022-09-20 20:43:10,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 774 transitions, 17191 flow [2022-09-20 20:43:10,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 20:43:10,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 20:43:10,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2001 transitions. [2022-09-20 20:43:10,278 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5122887864823349 [2022-09-20 20:43:10,279 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2001 transitions. [2022-09-20 20:43:10,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2001 transitions. [2022-09-20 20:43:10,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:10,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2001 transitions. [2022-09-20 20:43:10,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.28571428571429) internal successors, (2001), 21 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:10,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:10,283 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:10,283 INFO L175 Difference]: Start difference. First operand has 509 places, 623 transitions, 13729 flow. Second operand 21 states and 2001 transitions. [2022-09-20 20:43:10,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 774 transitions, 17191 flow [2022-09-20 20:43:10,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 774 transitions, 16764 flow, removed 83 selfloop flow, removed 9 redundant places. [2022-09-20 20:43:11,001 INFO L231 Difference]: Finished difference. Result has 529 places, 644 transitions, 14549 flow [2022-09-20 20:43:11,001 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=13318, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=14549, PETRI_PLACES=529, PETRI_TRANSITIONS=644} [2022-09-20 20:43:11,002 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 357 predicate places. [2022-09-20 20:43:11,002 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 644 transitions, 14549 flow [2022-09-20 20:43:11,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:11,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:11,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:43:11,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-09-20 20:43:11,002 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:11,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:11,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2054893551, now seen corresponding path program 18 times [2022-09-20 20:43:11,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:11,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596528159] [2022-09-20 20:43:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:11,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:11,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:11,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:11,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596528159] [2022-09-20 20:43:11,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596528159] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:11,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:11,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 20:43:11,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769030713] [2022-09-20 20:43:11,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:11,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 20:43:11,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:11,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 20:43:11,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2022-09-20 20:43:11,412 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:43:11,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 644 transitions, 14549 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:11,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:11,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:43:11,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:14,681 INFO L130 PetriNetUnfolder]: 2852/8702 cut-off events. [2022-09-20 20:43:14,681 INFO L131 PetriNetUnfolder]: For 117000/117028 co-relation queries the response was YES. [2022-09-20 20:43:14,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39046 conditions, 8702 events. 2852/8702 cut-off events. For 117000/117028 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 87401 event pairs, 1395 based on Foata normal form. 19/8536 useless extension candidates. Maximal degree in co-relation 38885. Up to 2851 conditions per place. [2022-09-20 20:43:14,813 INFO L137 encePairwiseOnDemand]: 161/186 looper letters, 473 selfloop transitions, 247 changer transitions 0/783 dead transitions. [2022-09-20 20:43:14,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 783 transitions, 17808 flow [2022-09-20 20:43:14,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 20:43:14,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 20:43:14,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2000 transitions. [2022-09-20 20:43:14,836 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5120327700972862 [2022-09-20 20:43:14,836 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2000 transitions. [2022-09-20 20:43:14,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2000 transitions. [2022-09-20 20:43:14,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:14,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2000 transitions. [2022-09-20 20:43:14,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.23809523809524) internal successors, (2000), 21 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:14,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:14,841 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:14,841 INFO L175 Difference]: Start difference. First operand has 529 places, 644 transitions, 14549 flow. Second operand 21 states and 2000 transitions. [2022-09-20 20:43:14,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 783 transitions, 17808 flow [2022-09-20 20:43:15,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 783 transitions, 17571 flow, removed 79 selfloop flow, removed 7 redundant places. [2022-09-20 20:43:15,664 INFO L231 Difference]: Finished difference. Result has 551 places, 663 transitions, 15543 flow [2022-09-20 20:43:15,665 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=14312, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=644, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=15543, PETRI_PLACES=551, PETRI_TRANSITIONS=663} [2022-09-20 20:43:15,666 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 379 predicate places. [2022-09-20 20:43:15,666 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 663 transitions, 15543 flow [2022-09-20 20:43:15,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:15,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:15,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:43:15,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-09-20 20:43:15,667 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:15,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:15,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1629226241, now seen corresponding path program 19 times [2022-09-20 20:43:15,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:15,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631141786] [2022-09-20 20:43:15,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:15,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:16,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:16,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:16,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631141786] [2022-09-20 20:43:16,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631141786] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:16,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:16,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 20:43:16,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284111108] [2022-09-20 20:43:16,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:16,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 20:43:16,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:16,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 20:43:16,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-09-20 20:43:16,262 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:43:16,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 663 transitions, 15543 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:16,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:16,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:43:16,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:19,808 INFO L130 PetriNetUnfolder]: 2852/8617 cut-off events. [2022-09-20 20:43:19,808 INFO L131 PetriNetUnfolder]: For 122190/122226 co-relation queries the response was YES. [2022-09-20 20:43:19,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39615 conditions, 8617 events. 2852/8617 cut-off events. For 122190/122226 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 86802 event pairs, 1256 based on Foata normal form. 23/8458 useless extension candidates. Maximal degree in co-relation 39445. Up to 2851 conditions per place. [2022-09-20 20:43:19,916 INFO L137 encePairwiseOnDemand]: 162/186 looper letters, 486 selfloop transitions, 234 changer transitions 0/783 dead transitions. [2022-09-20 20:43:19,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 571 places, 783 transitions, 18455 flow [2022-09-20 20:43:19,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 20:43:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 20:43:19,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1991 transitions. [2022-09-20 20:43:19,918 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5097286226318485 [2022-09-20 20:43:19,918 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1991 transitions. [2022-09-20 20:43:19,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1991 transitions. [2022-09-20 20:43:19,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:19,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1991 transitions. [2022-09-20 20:43:19,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.80952380952381) internal successors, (1991), 21 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:19,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:19,922 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:19,922 INFO L175 Difference]: Start difference. First operand has 551 places, 663 transitions, 15543 flow. Second operand 21 states and 1991 transitions. [2022-09-20 20:43:19,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 571 places, 783 transitions, 18455 flow [2022-09-20 20:43:20,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 783 transitions, 18208 flow, removed 59 selfloop flow, removed 8 redundant places. [2022-09-20 20:43:20,814 INFO L231 Difference]: Finished difference. Result has 569 places, 669 transitions, 15999 flow [2022-09-20 20:43:20,815 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=15296, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=15999, PETRI_PLACES=569, PETRI_TRANSITIONS=669} [2022-09-20 20:43:20,815 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 397 predicate places. [2022-09-20 20:43:20,815 INFO L495 AbstractCegarLoop]: Abstraction has has 569 places, 669 transitions, 15999 flow [2022-09-20 20:43:20,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:20,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:20,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:43:20,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-09-20 20:43:20,816 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:20,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:20,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1910083107, now seen corresponding path program 20 times [2022-09-20 20:43:20,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:20,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821031525] [2022-09-20 20:43:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:20,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:21,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:21,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:21,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821031525] [2022-09-20 20:43:21,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821031525] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:21,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:21,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:43:21,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493142696] [2022-09-20 20:43:21,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:21,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:43:21,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:21,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:43:21,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:43:21,136 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:43:21,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 669 transitions, 15999 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:21,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:21,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:43:21,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:25,743 INFO L130 PetriNetUnfolder]: 3176/9612 cut-off events. [2022-09-20 20:43:25,743 INFO L131 PetriNetUnfolder]: For 145606/145636 co-relation queries the response was YES. [2022-09-20 20:43:25,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44321 conditions, 9612 events. 3176/9612 cut-off events. For 145606/145636 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 98905 event pairs, 1368 based on Foata normal form. 20/9461 useless extension candidates. Maximal degree in co-relation 44145. Up to 3270 conditions per place. [2022-09-20 20:43:25,896 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 515 selfloop transitions, 264 changer transitions 0/842 dead transitions. [2022-09-20 20:43:25,896 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 842 transitions, 19998 flow [2022-09-20 20:43:25,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-09-20 20:43:25,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-09-20 20:43:25,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2473 transitions. [2022-09-20 20:43:25,898 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.511373035566584 [2022-09-20 20:43:25,898 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2473 transitions. [2022-09-20 20:43:25,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2473 transitions. [2022-09-20 20:43:25,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:25,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2473 transitions. [2022-09-20 20:43:25,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 95.11538461538461) internal successors, (2473), 26 states have internal predecessors, (2473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:25,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:25,904 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:25,904 INFO L175 Difference]: Start difference. First operand has 569 places, 669 transitions, 15999 flow. Second operand 26 states and 2473 transitions. [2022-09-20 20:43:25,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 842 transitions, 19998 flow [2022-09-20 20:43:27,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 842 transitions, 19645 flow, removed 101 selfloop flow, removed 9 redundant places. [2022-09-20 20:43:27,024 INFO L231 Difference]: Finished difference. Result has 597 places, 731 transitions, 18196 flow [2022-09-20 20:43:27,025 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=15661, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=669, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=18196, PETRI_PLACES=597, PETRI_TRANSITIONS=731} [2022-09-20 20:43:27,026 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 425 predicate places. [2022-09-20 20:43:27,026 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 731 transitions, 18196 flow [2022-09-20 20:43:27,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:27,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:27,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:43:27,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-09-20 20:43:27,027 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:27,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:27,027 INFO L85 PathProgramCache]: Analyzing trace with hash 453525857, now seen corresponding path program 21 times [2022-09-20 20:43:27,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:27,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981502410] [2022-09-20 20:43:27,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:27,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:27,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:27,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:27,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981502410] [2022-09-20 20:43:27,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981502410] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:27,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:27,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-09-20 20:43:27,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500313503] [2022-09-20 20:43:27,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:27,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-20 20:43:27,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:27,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-20 20:43:27,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-09-20 20:43:27,265 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-09-20 20:43:27,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 731 transitions, 18196 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:27,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:27,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-09-20 20:43:27,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:31,398 INFO L130 PetriNetUnfolder]: 3192/10645 cut-off events. [2022-09-20 20:43:31,398 INFO L131 PetriNetUnfolder]: For 200143/200592 co-relation queries the response was YES. [2022-09-20 20:43:31,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50157 conditions, 10645 events. 3192/10645 cut-off events. For 200143/200592 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 118460 event pairs, 629 based on Foata normal form. 362/10748 useless extension candidates. Maximal degree in co-relation 49970. Up to 2339 conditions per place. [2022-09-20 20:43:31,633 INFO L137 encePairwiseOnDemand]: 161/186 looper letters, 586 selfloop transitions, 391 changer transitions 0/1061 dead transitions. [2022-09-20 20:43:31,633 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 1061 transitions, 27837 flow [2022-09-20 20:43:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 20:43:31,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 20:43:31,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1844 transitions. [2022-09-20 20:43:31,635 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5217883418222977 [2022-09-20 20:43:31,635 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1844 transitions. [2022-09-20 20:43:31,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1844 transitions. [2022-09-20 20:43:31,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:31,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1844 transitions. [2022-09-20 20:43:31,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 97.05263157894737) internal successors, (1844), 19 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:31,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:31,639 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:31,639 INFO L175 Difference]: Start difference. First operand has 597 places, 731 transitions, 18196 flow. Second operand 19 states and 1844 transitions. [2022-09-20 20:43:31,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 1061 transitions, 27837 flow [2022-09-20 20:43:32,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 608 places, 1061 transitions, 26771 flow, removed 475 selfloop flow, removed 7 redundant places. [2022-09-20 20:43:32,795 INFO L231 Difference]: Finished difference. Result has 615 places, 867 transitions, 22860 flow [2022-09-20 20:43:32,796 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=17672, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=255, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=393, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=22860, PETRI_PLACES=615, PETRI_TRANSITIONS=867} [2022-09-20 20:43:32,796 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 443 predicate places. [2022-09-20 20:43:32,796 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 867 transitions, 22860 flow [2022-09-20 20:43:32,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:32,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:32,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:43:32,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-09-20 20:43:32,797 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:32,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:32,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1756237041, now seen corresponding path program 22 times [2022-09-20 20:43:32,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:32,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12830338] [2022-09-20 20:43:32,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:32,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:33,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:33,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12830338] [2022-09-20 20:43:33,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12830338] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:33,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:33,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:43:33,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411583798] [2022-09-20 20:43:33,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:33,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:43:33,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:33,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:43:33,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:43:33,165 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:43:33,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 867 transitions, 22860 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:33,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:33,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:43:33,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:38,902 INFO L130 PetriNetUnfolder]: 3577/11506 cut-off events. [2022-09-20 20:43:38,902 INFO L131 PetriNetUnfolder]: For 209776/209804 co-relation queries the response was YES. [2022-09-20 20:43:39,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56713 conditions, 11506 events. 3577/11506 cut-off events. For 209776/209804 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 126135 event pairs, 1604 based on Foata normal form. 19/11286 useless extension candidates. Maximal degree in co-relation 56520. Up to 3988 conditions per place. [2022-09-20 20:43:39,151 INFO L137 encePairwiseOnDemand]: 160/186 looper letters, 620 selfloop transitions, 304 changer transitions 0/987 dead transitions. [2022-09-20 20:43:39,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 987 transitions, 26700 flow [2022-09-20 20:43:39,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-20 20:43:39,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-20 20:43:39,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1815 transitions. [2022-09-20 20:43:39,153 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5135823429541596 [2022-09-20 20:43:39,153 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1815 transitions. [2022-09-20 20:43:39,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1815 transitions. [2022-09-20 20:43:39,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:39,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1815 transitions. [2022-09-20 20:43:39,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.52631578947368) internal successors, (1815), 19 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:39,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:39,159 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:39,159 INFO L175 Difference]: Start difference. First operand has 615 places, 867 transitions, 22860 flow. Second operand 19 states and 1815 transitions. [2022-09-20 20:43:39,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 987 transitions, 26700 flow [2022-09-20 20:43:40,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 987 transitions, 26140 flow, removed 162 selfloop flow, removed 8 redundant places. [2022-09-20 20:43:40,797 INFO L231 Difference]: Finished difference. Result has 634 places, 897 transitions, 24454 flow [2022-09-20 20:43:40,798 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=22426, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=274, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=24454, PETRI_PLACES=634, PETRI_TRANSITIONS=897} [2022-09-20 20:43:40,798 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 462 predicate places. [2022-09-20 20:43:40,798 INFO L495 AbstractCegarLoop]: Abstraction has has 634 places, 897 transitions, 24454 flow [2022-09-20 20:43:40,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:40,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:40,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:43:40,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-20 20:43:40,799 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:40,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:40,799 INFO L85 PathProgramCache]: Analyzing trace with hash -4792749, now seen corresponding path program 23 times [2022-09-20 20:43:40,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:40,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854105602] [2022-09-20 20:43:40,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:40,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:40,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:41,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:41,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:41,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854105602] [2022-09-20 20:43:41,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854105602] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:41,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:41,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-09-20 20:43:41,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304302426] [2022-09-20 20:43:41,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:41,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-20 20:43:41,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:41,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-20 20:43:41,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-09-20 20:43:41,134 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 186 [2022-09-20 20:43:41,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 897 transitions, 24454 flow. Second operand has 20 states, 20 states have (on average 91.0) internal successors, (1820), 20 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:41,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:41,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 186 [2022-09-20 20:43:41,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:46,710 INFO L130 PetriNetUnfolder]: 3188/11228 cut-off events. [2022-09-20 20:43:46,710 INFO L131 PetriNetUnfolder]: For 245008/245500 co-relation queries the response was YES. [2022-09-20 20:43:46,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55875 conditions, 11228 events. 3188/11228 cut-off events. For 245008/245500 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 126509 event pairs, 1210 based on Foata normal form. 394/11369 useless extension candidates. Maximal degree in co-relation 55674. Up to 2892 conditions per place. [2022-09-20 20:43:46,990 INFO L137 encePairwiseOnDemand]: 157/186 looper letters, 653 selfloop transitions, 411 changer transitions 0/1149 dead transitions. [2022-09-20 20:43:46,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 1149 transitions, 32201 flow [2022-09-20 20:43:46,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-09-20 20:43:46,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-09-20 20:43:46,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2610 transitions. [2022-09-20 20:43:46,993 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5011520737327189 [2022-09-20 20:43:46,993 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2610 transitions. [2022-09-20 20:43:46,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2610 transitions. [2022-09-20 20:43:46,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:46,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2610 transitions. [2022-09-20 20:43:46,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 93.21428571428571) internal successors, (2610), 28 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:47,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 186.0) internal successors, (5394), 29 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:47,029 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 186.0) internal successors, (5394), 29 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:47,029 INFO L175 Difference]: Start difference. First operand has 634 places, 897 transitions, 24454 flow. Second operand 28 states and 2610 transitions. [2022-09-20 20:43:47,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 1149 transitions, 32201 flow [2022-09-20 20:43:48,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 655 places, 1149 transitions, 31772 flow, removed 176 selfloop flow, removed 6 redundant places. [2022-09-20 20:43:48,630 INFO L231 Difference]: Finished difference. Result has 663 places, 991 transitions, 28160 flow [2022-09-20 20:43:48,631 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=24064, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=897, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=317, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=28160, PETRI_PLACES=663, PETRI_TRANSITIONS=991} [2022-09-20 20:43:48,635 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 491 predicate places. [2022-09-20 20:43:48,636 INFO L495 AbstractCegarLoop]: Abstraction has has 663 places, 991 transitions, 28160 flow [2022-09-20 20:43:48,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 91.0) internal successors, (1820), 20 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:48,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:48,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:43:48,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-09-20 20:43:48,638 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:48,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:48,638 INFO L85 PathProgramCache]: Analyzing trace with hash -876170013, now seen corresponding path program 24 times [2022-09-20 20:43:48,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:48,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136748108] [2022-09-20 20:43:48,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:48,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:49,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:49,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:49,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136748108] [2022-09-20 20:43:49,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136748108] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:49,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:49,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:43:49,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873243327] [2022-09-20 20:43:49,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:49,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:43:49,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:49,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:43:49,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:43:49,100 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:43:49,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 991 transitions, 28160 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:49,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:49,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:43:49,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:43:55,767 INFO L130 PetriNetUnfolder]: 3564/11825 cut-off events. [2022-09-20 20:43:55,767 INFO L131 PetriNetUnfolder]: For 261408/261436 co-relation queries the response was YES. [2022-09-20 20:43:55,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61742 conditions, 11825 events. 3564/11825 cut-off events. For 261408/261436 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 130822 event pairs, 1483 based on Foata normal form. 19/11627 useless extension candidates. Maximal degree in co-relation 61532. Up to 4015 conditions per place. [2022-09-20 20:43:55,955 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 731 selfloop transitions, 382 changer transitions 0/1176 dead transitions. [2022-09-20 20:43:55,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 1176 transitions, 33030 flow [2022-09-20 20:43:55,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-09-20 20:43:55,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-09-20 20:43:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2568 transitions. [2022-09-20 20:43:55,958 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5113500597371565 [2022-09-20 20:43:55,958 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2568 transitions. [2022-09-20 20:43:55,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2568 transitions. [2022-09-20 20:43:55,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:43:55,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2568 transitions. [2022-09-20 20:43:55,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 95.11111111111111) internal successors, (2568), 27 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:55,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 186.0) internal successors, (5208), 28 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:55,963 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 186.0) internal successors, (5208), 28 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:55,963 INFO L175 Difference]: Start difference. First operand has 663 places, 991 transitions, 28160 flow. Second operand 27 states and 2568 transitions. [2022-09-20 20:43:55,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 1176 transitions, 33030 flow [2022-09-20 20:43:58,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 1176 transitions, 32587 flow, removed 121 selfloop flow, removed 15 redundant places. [2022-09-20 20:43:58,049 INFO L231 Difference]: Finished difference. Result has 682 places, 1024 transitions, 30244 flow [2022-09-20 20:43:58,050 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=27763, PETRI_DIFFERENCE_MINUEND_PLACES=648, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=991, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=349, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=616, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=30244, PETRI_PLACES=682, PETRI_TRANSITIONS=1024} [2022-09-20 20:43:58,051 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 510 predicate places. [2022-09-20 20:43:58,051 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 1024 transitions, 30244 flow [2022-09-20 20:43:58,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:58,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:43:58,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:43:58,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-09-20 20:43:58,052 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:43:58,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:43:58,052 INFO L85 PathProgramCache]: Analyzing trace with hash -153755469, now seen corresponding path program 25 times [2022-09-20 20:43:58,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:43:58,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381210047] [2022-09-20 20:43:58,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:43:58,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:43:58,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:43:58,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:43:58,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:43:58,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381210047] [2022-09-20 20:43:58,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381210047] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:43:58,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:43:58,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:43:58,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963559202] [2022-09-20 20:43:58,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:43:58,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:43:58,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:43:58,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:43:58,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:43:58,339 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:43:58,339 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 1024 transitions, 30244 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:43:58,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:43:58,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:43:58,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:44:04,976 INFO L130 PetriNetUnfolder]: 3561/11831 cut-off events. [2022-09-20 20:44:04,977 INFO L131 PetriNetUnfolder]: For 275758/275816 co-relation queries the response was YES. [2022-09-20 20:44:05,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62873 conditions, 11831 events. 3561/11831 cut-off events. For 275758/275816 co-relation queries the response was YES. Maximal size of possible extension queue 659. Compared 131588 event pairs, 1268 based on Foata normal form. 21/11626 useless extension candidates. Maximal degree in co-relation 62656. Up to 5741 conditions per place. [2022-09-20 20:44:05,222 INFO L137 encePairwiseOnDemand]: 161/186 looper letters, 704 selfloop transitions, 372 changer transitions 0/1139 dead transitions. [2022-09-20 20:44:05,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 1139 transitions, 34485 flow [2022-09-20 20:44:05,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 20:44:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 20:44:05,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1895 transitions. [2022-09-20 20:44:05,224 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5094086021505376 [2022-09-20 20:44:05,224 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1895 transitions. [2022-09-20 20:44:05,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1895 transitions. [2022-09-20 20:44:05,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:44:05,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1895 transitions. [2022-09-20 20:44:05,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.75) internal successors, (1895), 20 states have internal predecessors, (1895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:05,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:05,228 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:05,228 INFO L175 Difference]: Start difference. First operand has 682 places, 1024 transitions, 30244 flow. Second operand 20 states and 1895 transitions. [2022-09-20 20:44:05,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 1139 transitions, 34485 flow [2022-09-20 20:44:07,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 1139 transitions, 33994 flow, removed 163 selfloop flow, removed 13 redundant places. [2022-09-20 20:44:07,726 INFO L231 Difference]: Finished difference. Result has 696 places, 1054 transitions, 32191 flow [2022-09-20 20:44:07,727 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=29753, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1024, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=32191, PETRI_PLACES=696, PETRI_TRANSITIONS=1054} [2022-09-20 20:44:07,728 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 524 predicate places. [2022-09-20 20:44:07,728 INFO L495 AbstractCegarLoop]: Abstraction has has 696 places, 1054 transitions, 32191 flow [2022-09-20 20:44:07,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:07,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:44:07,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:44:07,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-09-20 20:44:07,729 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:44:07,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:44:07,729 INFO L85 PathProgramCache]: Analyzing trace with hash -7286529, now seen corresponding path program 26 times [2022-09-20 20:44:07,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:44:07,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194643203] [2022-09-20 20:44:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:44:07,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:44:07,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:44:08,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:44:08,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:44:08,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194643203] [2022-09-20 20:44:08,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194643203] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:44:08,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:44:08,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:44:08,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295137611] [2022-09-20 20:44:08,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:44:08,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:44:08,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:44:08,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:44:08,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:44:08,093 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:44:08,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 696 places, 1054 transitions, 32191 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:08,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:44:08,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:44:08,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:44:15,156 INFO L130 PetriNetUnfolder]: 3565/11911 cut-off events. [2022-09-20 20:44:15,156 INFO L131 PetriNetUnfolder]: For 316019/316249 co-relation queries the response was YES. [2022-09-20 20:44:15,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64485 conditions, 11911 events. 3565/11911 cut-off events. For 316019/316249 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 132121 event pairs, 426 based on Foata normal form. 217/11977 useless extension candidates. Maximal degree in co-relation 64260. Up to 2656 conditions per place. [2022-09-20 20:44:15,427 INFO L137 encePairwiseOnDemand]: 158/186 looper letters, 666 selfloop transitions, 516 changer transitions 0/1245 dead transitions. [2022-09-20 20:44:15,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 1245 transitions, 37390 flow [2022-09-20 20:44:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-09-20 20:44:15,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-09-20 20:44:15,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2762 transitions. [2022-09-20 20:44:15,430 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5120504263997033 [2022-09-20 20:44:15,430 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2762 transitions. [2022-09-20 20:44:15,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2762 transitions. [2022-09-20 20:44:15,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:44:15,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2762 transitions. [2022-09-20 20:44:15,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 95.24137931034483) internal successors, (2762), 29 states have internal predecessors, (2762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:15,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:15,435 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:15,435 INFO L175 Difference]: Start difference. First operand has 696 places, 1054 transitions, 32191 flow. Second operand 29 states and 2762 transitions. [2022-09-20 20:44:15,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 1245 transitions, 37390 flow [2022-09-20 20:44:17,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 716 places, 1245 transitions, 36824 flow, removed 208 selfloop flow, removed 8 redundant places. [2022-09-20 20:44:17,789 INFO L231 Difference]: Finished difference. Result has 726 places, 1110 transitions, 35009 flow [2022-09-20 20:44:17,790 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=31654, PETRI_DIFFERENCE_MINUEND_PLACES=688, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1054, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=463, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=561, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=35009, PETRI_PLACES=726, PETRI_TRANSITIONS=1110} [2022-09-20 20:44:17,790 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 554 predicate places. [2022-09-20 20:44:17,790 INFO L495 AbstractCegarLoop]: Abstraction has has 726 places, 1110 transitions, 35009 flow [2022-09-20 20:44:17,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:17,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:44:17,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:44:17,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-09-20 20:44:17,791 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:44:17,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:44:17,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1033102353, now seen corresponding path program 27 times [2022-09-20 20:44:17,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:44:17,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839736393] [2022-09-20 20:44:17,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:44:17,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:44:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:44:18,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:44:18,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:44:18,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839736393] [2022-09-20 20:44:18,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839736393] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:44:18,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:44:18,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 20:44:18,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991523673] [2022-09-20 20:44:18,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:44:18,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 20:44:18,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:44:18,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 20:44:18,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-09-20 20:44:18,140 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:44:18,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 726 places, 1110 transitions, 35009 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:18,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:44:18,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:44:18,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:44:25,189 INFO L130 PetriNetUnfolder]: 3602/12032 cut-off events. [2022-09-20 20:44:25,190 INFO L131 PetriNetUnfolder]: For 324775/324849 co-relation queries the response was YES. [2022-09-20 20:44:25,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66937 conditions, 12032 events. 3602/12032 cut-off events. For 324775/324849 co-relation queries the response was YES. Maximal size of possible extension queue 672. Compared 134306 event pairs, 425 based on Foata normal form. 21/11901 useless extension candidates. Maximal degree in co-relation 66702. Up to 2472 conditions per place. [2022-09-20 20:44:25,405 INFO L137 encePairwiseOnDemand]: 159/186 looper letters, 631 selfloop transitions, 565 changer transitions 0/1259 dead transitions. [2022-09-20 20:44:25,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 1259 transitions, 39735 flow [2022-09-20 20:44:25,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 20:44:25,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 20:44:25,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2012 transitions. [2022-09-20 20:44:25,407 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.51510496671787 [2022-09-20 20:44:25,407 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2012 transitions. [2022-09-20 20:44:25,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2012 transitions. [2022-09-20 20:44:25,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:44:25,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2012 transitions. [2022-09-20 20:44:25,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.80952380952381) internal successors, (2012), 21 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:25,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:25,411 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:25,411 INFO L175 Difference]: Start difference. First operand has 726 places, 1110 transitions, 35009 flow. Second operand 21 states and 2012 transitions. [2022-09-20 20:44:25,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 1259 transitions, 39735 flow [2022-09-20 20:44:28,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 740 places, 1259 transitions, 39038 flow, removed 322 selfloop flow, removed 6 redundant places. [2022-09-20 20:44:28,153 INFO L231 Difference]: Finished difference. Result has 748 places, 1127 transitions, 36711 flow [2022-09-20 20:44:28,154 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=34498, PETRI_DIFFERENCE_MINUEND_PLACES=720, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=548, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=36711, PETRI_PLACES=748, PETRI_TRANSITIONS=1127} [2022-09-20 20:44:28,154 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 576 predicate places. [2022-09-20 20:44:28,154 INFO L495 AbstractCegarLoop]: Abstraction has has 748 places, 1127 transitions, 36711 flow [2022-09-20 20:44:28,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:28,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:44:28,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:44:28,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-09-20 20:44:28,155 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:44:28,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:44:28,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1221344099, now seen corresponding path program 28 times [2022-09-20 20:44:28,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:44:28,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191117605] [2022-09-20 20:44:28,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:44:28,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:44:28,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:44:28,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:44:28,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:44:28,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191117605] [2022-09-20 20:44:28,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191117605] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:44:28,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:44:28,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-09-20 20:44:28,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559962988] [2022-09-20 20:44:28,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:44:28,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-20 20:44:28,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:44:28,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-20 20:44:28,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-09-20 20:44:28,379 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-09-20 20:44:28,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 748 places, 1127 transitions, 36711 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:28,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:44:28,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-09-20 20:44:28,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:44:34,681 INFO L130 PetriNetUnfolder]: 3217/11738 cut-off events. [2022-09-20 20:44:34,681 INFO L131 PetriNetUnfolder]: For 397607/398097 co-relation queries the response was YES. [2022-09-20 20:44:34,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66524 conditions, 11738 events. 3217/11738 cut-off events. For 397607/398097 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 133723 event pairs, 1726 based on Foata normal form. 397/11879 useless extension candidates. Maximal degree in co-relation 66280. Up to 4528 conditions per place. [2022-09-20 20:44:34,894 INFO L137 encePairwiseOnDemand]: 164/186 looper letters, 747 selfloop transitions, 448 changer transitions 0/1281 dead transitions. [2022-09-20 20:44:34,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 765 places, 1281 transitions, 43171 flow [2022-09-20 20:44:34,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-20 20:44:34,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-20 20:44:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1725 transitions. [2022-09-20 20:44:34,896 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5152329749103942 [2022-09-20 20:44:34,896 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1725 transitions. [2022-09-20 20:44:34,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1725 transitions. [2022-09-20 20:44:34,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:44:34,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1725 transitions. [2022-09-20 20:44:34,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 95.83333333333333) internal successors, (1725), 18 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:34,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:34,899 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:34,899 INFO L175 Difference]: Start difference. First operand has 748 places, 1127 transitions, 36711 flow. Second operand 18 states and 1725 transitions. [2022-09-20 20:44:34,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 765 places, 1281 transitions, 43171 flow [2022-09-20 20:44:37,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 757 places, 1281 transitions, 42686 flow, removed 117 selfloop flow, removed 8 redundant places. [2022-09-20 20:44:37,853 INFO L231 Difference]: Finished difference. Result has 765 places, 1180 transitions, 39484 flow [2022-09-20 20:44:37,854 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=36363, PETRI_DIFFERENCE_MINUEND_PLACES=740, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=395, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=39484, PETRI_PLACES=765, PETRI_TRANSITIONS=1180} [2022-09-20 20:44:37,855 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 593 predicate places. [2022-09-20 20:44:37,855 INFO L495 AbstractCegarLoop]: Abstraction has has 765 places, 1180 transitions, 39484 flow [2022-09-20 20:44:37,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:37,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:44:37,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:44:37,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-09-20 20:44:37,855 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:44:37,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:44:37,856 INFO L85 PathProgramCache]: Analyzing trace with hash 498472717, now seen corresponding path program 29 times [2022-09-20 20:44:37,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:44:37,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471605723] [2022-09-20 20:44:37,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:44:37,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:44:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:44:38,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:44:38,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:44:38,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471605723] [2022-09-20 20:44:38,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471605723] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:44:38,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:44:38,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:44:38,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717430144] [2022-09-20 20:44:38,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:44:38,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:44:38,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:44:38,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:44:38,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:44:38,179 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:44:38,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 765 places, 1180 transitions, 39484 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:38,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:44:38,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:44:38,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:44:45,768 INFO L130 PetriNetUnfolder]: 3596/12302 cut-off events. [2022-09-20 20:44:45,769 INFO L131 PetriNetUnfolder]: For 388254/388312 co-relation queries the response was YES. [2022-09-20 20:44:45,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71906 conditions, 12302 events. 3596/12302 cut-off events. For 388254/388312 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 138717 event pairs, 1396 based on Foata normal form. 21/12094 useless extension candidates. Maximal degree in co-relation 71654. Up to 4024 conditions per place. [2022-09-20 20:44:46,021 INFO L137 encePairwiseOnDemand]: 160/186 looper letters, 831 selfloop transitions, 407 changer transitions 0/1301 dead transitions. [2022-09-20 20:44:46,021 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 784 places, 1301 transitions, 43321 flow [2022-09-20 20:44:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 20:44:46,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 20:44:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1910 transitions. [2022-09-20 20:44:46,023 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5134408602150538 [2022-09-20 20:44:46,023 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1910 transitions. [2022-09-20 20:44:46,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1910 transitions. [2022-09-20 20:44:46,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:44:46,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1910 transitions. [2022-09-20 20:44:46,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.5) internal successors, (1910), 20 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:46,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:46,029 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:46,029 INFO L175 Difference]: Start difference. First operand has 765 places, 1180 transitions, 39484 flow. Second operand 20 states and 1910 transitions. [2022-09-20 20:44:46,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 784 places, 1301 transitions, 43321 flow [2022-09-20 20:44:49,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 777 places, 1301 transitions, 42751 flow, removed 198 selfloop flow, removed 7 redundant places. [2022-09-20 20:44:49,993 INFO L231 Difference]: Finished difference. Result has 782 places, 1191 transitions, 40269 flow [2022-09-20 20:44:49,994 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=38941, PETRI_DIFFERENCE_MINUEND_PLACES=758, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=396, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=773, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=40269, PETRI_PLACES=782, PETRI_TRANSITIONS=1191} [2022-09-20 20:44:49,996 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 610 predicate places. [2022-09-20 20:44:49,997 INFO L495 AbstractCegarLoop]: Abstraction has has 782 places, 1191 transitions, 40269 flow [2022-09-20 20:44:49,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:49,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:44:49,997 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:44:49,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-09-20 20:44:49,997 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:44:49,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:44:49,998 INFO L85 PathProgramCache]: Analyzing trace with hash -2102939281, now seen corresponding path program 30 times [2022-09-20 20:44:49,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:44:49,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854350813] [2022-09-20 20:44:49,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:44:49,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:44:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:44:50,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:44:50,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:44:50,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854350813] [2022-09-20 20:44:50,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854350813] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:44:50,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:44:50,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:44:50,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108124840] [2022-09-20 20:44:50,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:44:50,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:44:50,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:44:50,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:44:50,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:44:50,362 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:44:50,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 782 places, 1191 transitions, 40269 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:50,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:44:50,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:44:50,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:44:58,481 INFO L130 PetriNetUnfolder]: 3596/12342 cut-off events. [2022-09-20 20:44:58,481 INFO L131 PetriNetUnfolder]: For 410975/410975 co-relation queries the response was YES. [2022-09-20 20:44:58,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72016 conditions, 12342 events. 3596/12342 cut-off events. For 410975/410975 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 138183 event pairs, 1510 based on Foata normal form. 1/12125 useless extension candidates. Maximal degree in co-relation 71759. Up to 4574 conditions per place. [2022-09-20 20:44:58,766 INFO L137 encePairwiseOnDemand]: 162/186 looper letters, 766 selfloop transitions, 461 changer transitions 0/1290 dead transitions. [2022-09-20 20:44:58,767 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 802 places, 1290 transitions, 44126 flow [2022-09-20 20:44:58,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 20:44:58,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 20:44:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1985 transitions. [2022-09-20 20:44:58,768 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5081925243215566 [2022-09-20 20:44:58,768 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1985 transitions. [2022-09-20 20:44:58,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1985 transitions. [2022-09-20 20:44:58,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:44:58,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1985 transitions. [2022-09-20 20:44:58,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.52380952380952) internal successors, (1985), 21 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:58,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:58,772 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:44:58,772 INFO L175 Difference]: Start difference. First operand has 782 places, 1191 transitions, 40269 flow. Second operand 21 states and 1985 transitions. [2022-09-20 20:44:58,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 802 places, 1290 transitions, 44126 flow [2022-09-20 20:45:01,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 784 places, 1290 transitions, 43399 flow, removed 210 selfloop flow, removed 18 redundant places. [2022-09-20 20:45:01,970 INFO L231 Difference]: Finished difference. Result has 790 places, 1207 transitions, 41101 flow [2022-09-20 20:45:01,971 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=39551, PETRI_DIFFERENCE_MINUEND_PLACES=764, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=445, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=730, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=41101, PETRI_PLACES=790, PETRI_TRANSITIONS=1207} [2022-09-20 20:45:01,971 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 618 predicate places. [2022-09-20 20:45:01,971 INFO L495 AbstractCegarLoop]: Abstraction has has 790 places, 1207 transitions, 41101 flow [2022-09-20 20:45:01,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:01,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:45:01,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:45:01,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-09-20 20:45:01,972 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:45:01,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:45:01,972 INFO L85 PathProgramCache]: Analyzing trace with hash -901568013, now seen corresponding path program 31 times [2022-09-20 20:45:01,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:45:01,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956452138] [2022-09-20 20:45:01,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:45:01,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:45:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:45:02,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:45:02,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:45:02,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956452138] [2022-09-20 20:45:02,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956452138] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:45:02,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:45:02,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:45:02,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490560928] [2022-09-20 20:45:02,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:45:02,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:45:02,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:45:02,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:45:02,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:45:02,282 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:45:02,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 790 places, 1207 transitions, 41101 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:02,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:45:02,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:45:02,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:45:09,820 INFO L130 PetriNetUnfolder]: 3596/12343 cut-off events. [2022-09-20 20:45:09,820 INFO L131 PetriNetUnfolder]: For 412454/412484 co-relation queries the response was YES. [2022-09-20 20:45:10,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72231 conditions, 12343 events. 3596/12343 cut-off events. For 412454/412484 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 138813 event pairs, 1669 based on Foata normal form. 21/12128 useless extension candidates. Maximal degree in co-relation 71977. Up to 4024 conditions per place. [2022-09-20 20:45:10,046 INFO L137 encePairwiseOnDemand]: 162/186 looper letters, 867 selfloop transitions, 391 changer transitions 0/1321 dead transitions. [2022-09-20 20:45:10,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 810 places, 1321 transitions, 44891 flow [2022-09-20 20:45:10,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-20 20:45:10,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-20 20:45:10,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1999 transitions. [2022-09-20 20:45:10,048 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5117767537122376 [2022-09-20 20:45:10,048 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1999 transitions. [2022-09-20 20:45:10,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1999 transitions. [2022-09-20 20:45:10,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:45:10,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1999 transitions. [2022-09-20 20:45:10,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.19047619047619) internal successors, (1999), 21 states have internal predecessors, (1999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:10,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:10,052 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:10,052 INFO L175 Difference]: Start difference. First operand has 790 places, 1207 transitions, 41101 flow. Second operand 21 states and 1999 transitions. [2022-09-20 20:45:10,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 810 places, 1321 transitions, 44891 flow [2022-09-20 20:45:13,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 803 places, 1321 transitions, 44292 flow, removed 219 selfloop flow, removed 7 redundant places. [2022-09-20 20:45:13,342 INFO L231 Difference]: Finished difference. Result has 809 places, 1218 transitions, 41755 flow [2022-09-20 20:45:13,343 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=40502, PETRI_DIFFERENCE_MINUEND_PLACES=783, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=380, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=816, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=41755, PETRI_PLACES=809, PETRI_TRANSITIONS=1218} [2022-09-20 20:45:13,344 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 637 predicate places. [2022-09-20 20:45:13,344 INFO L495 AbstractCegarLoop]: Abstraction has has 809 places, 1218 transitions, 41755 flow [2022-09-20 20:45:13,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:13,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:45:13,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:45:13,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-09-20 20:45:13,345 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:45:13,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:45:13,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1404263389, now seen corresponding path program 32 times [2022-09-20 20:45:13,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:45:13,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755153148] [2022-09-20 20:45:13,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:45:13,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:45:13,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:45:13,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:45:13,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:45:13,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755153148] [2022-09-20 20:45:13,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755153148] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:45:13,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:45:13,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:45:13,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002897292] [2022-09-20 20:45:13,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:45:13,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:45:13,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:45:13,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:45:13,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:45:13,673 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:45:13,674 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 1218 transitions, 41755 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:13,674 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:45:13,674 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:45:13,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:45:21,233 INFO L130 PetriNetUnfolder]: 3593/12426 cut-off events. [2022-09-20 20:45:21,233 INFO L131 PetriNetUnfolder]: For 434543/434543 co-relation queries the response was YES. [2022-09-20 20:45:21,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73258 conditions, 12426 events. 3593/12426 cut-off events. For 434543/434543 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 139130 event pairs, 2072 based on Foata normal form. 1/12161 useless extension candidates. Maximal degree in co-relation 72997. Up to 4873 conditions per place. [2022-09-20 20:45:21,455 INFO L137 encePairwiseOnDemand]: 163/186 looper letters, 847 selfloop transitions, 443 changer transitions 0/1353 dead transitions. [2022-09-20 20:45:21,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 828 places, 1353 transitions, 46778 flow [2022-09-20 20:45:21,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 20:45:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 20:45:21,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1902 transitions. [2022-09-20 20:45:21,456 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5112903225806451 [2022-09-20 20:45:21,456 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1902 transitions. [2022-09-20 20:45:21,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1902 transitions. [2022-09-20 20:45:21,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:45:21,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1902 transitions. [2022-09-20 20:45:21,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.1) internal successors, (1902), 20 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:21,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:21,460 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:21,460 INFO L175 Difference]: Start difference. First operand has 809 places, 1218 transitions, 41755 flow. Second operand 20 states and 1902 transitions. [2022-09-20 20:45:21,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 828 places, 1353 transitions, 46778 flow [2022-09-20 20:45:24,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 818 places, 1353 transitions, 45754 flow, removed 223 selfloop flow, removed 10 redundant places. [2022-09-20 20:45:24,963 INFO L231 Difference]: Finished difference. Result has 824 places, 1248 transitions, 43064 flow [2022-09-20 20:45:24,964 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=40772, PETRI_DIFFERENCE_MINUEND_PLACES=799, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=413, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=787, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=43064, PETRI_PLACES=824, PETRI_TRANSITIONS=1248} [2022-09-20 20:45:24,964 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 652 predicate places. [2022-09-20 20:45:24,964 INFO L495 AbstractCegarLoop]: Abstraction has has 824 places, 1248 transitions, 43064 flow [2022-09-20 20:45:24,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:24,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:45:24,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:45:24,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-09-20 20:45:24,965 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:45:24,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:45:24,965 INFO L85 PathProgramCache]: Analyzing trace with hash -427369609, now seen corresponding path program 33 times [2022-09-20 20:45:24,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:45:24,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449982118] [2022-09-20 20:45:24,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:45:24,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:45:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:45:25,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:45:25,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:45:25,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449982118] [2022-09-20 20:45:25,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449982118] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:45:25,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:45:25,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:45:25,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299913374] [2022-09-20 20:45:25,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:45:25,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:45:25,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:45:25,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:45:25,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:45:25,285 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:45:25,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 1248 transitions, 43064 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:25,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:45:25,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:45:25,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:45:33,006 INFO L130 PetriNetUnfolder]: 3590/12480 cut-off events. [2022-09-20 20:45:33,006 INFO L131 PetriNetUnfolder]: For 455605/455605 co-relation queries the response was YES. [2022-09-20 20:45:33,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73719 conditions, 12480 events. 3590/12480 cut-off events. For 455605/455605 co-relation queries the response was YES. Maximal size of possible extension queue 650. Compared 139996 event pairs, 2072 based on Foata normal form. 1/12214 useless extension candidates. Maximal degree in co-relation 73454. Up to 4873 conditions per place. [2022-09-20 20:45:33,669 INFO L137 encePairwiseOnDemand]: 163/186 looper letters, 852 selfloop transitions, 453 changer transitions 0/1368 dead transitions. [2022-09-20 20:45:33,669 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 843 places, 1368 transitions, 48024 flow [2022-09-20 20:45:33,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 20:45:33,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 20:45:33,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1892 transitions. [2022-09-20 20:45:33,670 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5086021505376344 [2022-09-20 20:45:33,670 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1892 transitions. [2022-09-20 20:45:33,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1892 transitions. [2022-09-20 20:45:33,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:45:33,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1892 transitions. [2022-09-20 20:45:33,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.6) internal successors, (1892), 20 states have internal predecessors, (1892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:33,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:33,674 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:33,674 INFO L175 Difference]: Start difference. First operand has 824 places, 1248 transitions, 43064 flow. Second operand 20 states and 1892 transitions. [2022-09-20 20:45:33,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 843 places, 1368 transitions, 48024 flow [2022-09-20 20:45:37,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 834 places, 1368 transitions, 47411 flow, removed 175 selfloop flow, removed 9 redundant places. [2022-09-20 20:45:37,523 INFO L231 Difference]: Finished difference. Result has 841 places, 1273 transitions, 44795 flow [2022-09-20 20:45:37,524 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=42451, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=428, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=44795, PETRI_PLACES=841, PETRI_TRANSITIONS=1273} [2022-09-20 20:45:37,524 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 669 predicate places. [2022-09-20 20:45:37,525 INFO L495 AbstractCegarLoop]: Abstraction has has 841 places, 1273 transitions, 44795 flow [2022-09-20 20:45:37,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:37,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:45:37,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:45:37,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-09-20 20:45:37,525 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:45:37,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:45:37,525 INFO L85 PathProgramCache]: Analyzing trace with hash 566976337, now seen corresponding path program 34 times [2022-09-20 20:45:37,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:45:37,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006915645] [2022-09-20 20:45:37,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:45:37,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:45:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:45:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:45:37,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:45:37,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006915645] [2022-09-20 20:45:37,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006915645] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:45:37,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:45:37,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:45:37,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800503308] [2022-09-20 20:45:37,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:45:37,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:45:37,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:45:37,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:45:37,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:45:37,836 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:45:37,837 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 841 places, 1273 transitions, 44795 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:37,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:45:37,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:45:37,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:45:45,610 INFO L130 PetriNetUnfolder]: 3587/12505 cut-off events. [2022-09-20 20:45:45,610 INFO L131 PetriNetUnfolder]: For 481197/481197 co-relation queries the response was YES. [2022-09-20 20:45:45,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74667 conditions, 12505 events. 3587/12505 cut-off events. For 481197/481197 co-relation queries the response was YES. Maximal size of possible extension queue 647. Compared 140457 event pairs, 2020 based on Foata normal form. 1/12249 useless extension candidates. Maximal degree in co-relation 74398. Up to 4834 conditions per place. [2022-09-20 20:45:45,846 INFO L137 encePairwiseOnDemand]: 163/186 looper letters, 862 selfloop transitions, 467 changer transitions 0/1392 dead transitions. [2022-09-20 20:45:45,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 1392 transitions, 49808 flow [2022-09-20 20:45:45,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 20:45:45,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 20:45:45,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1883 transitions. [2022-09-20 20:45:45,864 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5061827956989248 [2022-09-20 20:45:45,864 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1883 transitions. [2022-09-20 20:45:45,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1883 transitions. [2022-09-20 20:45:45,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:45:45,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1883 transitions. [2022-09-20 20:45:45,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.15) internal successors, (1883), 20 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:45,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:45,867 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:45,867 INFO L175 Difference]: Start difference. First operand has 841 places, 1273 transitions, 44795 flow. Second operand 20 states and 1883 transitions. [2022-09-20 20:45:45,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 1392 transitions, 49808 flow [2022-09-20 20:45:50,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 852 places, 1392 transitions, 49251 flow, removed 189 selfloop flow, removed 8 redundant places. [2022-09-20 20:45:50,130 INFO L231 Difference]: Finished difference. Result has 859 places, 1301 transitions, 46720 flow [2022-09-20 20:45:50,131 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=44241, PETRI_DIFFERENCE_MINUEND_PLACES=833, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=439, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=815, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=46720, PETRI_PLACES=859, PETRI_TRANSITIONS=1301} [2022-09-20 20:45:50,132 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 687 predicate places. [2022-09-20 20:45:50,132 INFO L495 AbstractCegarLoop]: Abstraction has has 859 places, 1301 transitions, 46720 flow [2022-09-20 20:45:50,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:50,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:45:50,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:45:50,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-09-20 20:45:50,133 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:45:50,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:45:50,133 INFO L85 PathProgramCache]: Analyzing trace with hash -902290363, now seen corresponding path program 35 times [2022-09-20 20:45:50,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:45:50,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661417354] [2022-09-20 20:45:50,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:45:50,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:45:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:45:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:45:50,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:45:50,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661417354] [2022-09-20 20:45:50,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661417354] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:45:50,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:45:50,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-09-20 20:45:50,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456146356] [2022-09-20 20:45:50,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:45:50,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-20 20:45:50,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:45:50,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-20 20:45:50,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-09-20 20:45:50,504 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:45:50,505 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 859 places, 1301 transitions, 46720 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:50,505 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:45:50,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:45:50,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:45:58,937 INFO L130 PetriNetUnfolder]: 3584/12572 cut-off events. [2022-09-20 20:45:58,937 INFO L131 PetriNetUnfolder]: For 518540/518540 co-relation queries the response was YES. [2022-09-20 20:45:59,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75753 conditions, 12572 events. 3584/12572 cut-off events. For 518540/518540 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 141388 event pairs, 2063 based on Foata normal form. 1/12306 useless extension candidates. Maximal degree in co-relation 75478. Up to 4834 conditions per place. [2022-09-20 20:45:59,189 INFO L137 encePairwiseOnDemand]: 163/186 looper letters, 896 selfloop transitions, 473 changer transitions 0/1432 dead transitions. [2022-09-20 20:45:59,189 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 878 places, 1432 transitions, 51940 flow [2022-09-20 20:45:59,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 20:45:59,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 20:45:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1899 transitions. [2022-09-20 20:45:59,191 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.510483870967742 [2022-09-20 20:45:59,191 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1899 transitions. [2022-09-20 20:45:59,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1899 transitions. [2022-09-20 20:45:59,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:45:59,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1899 transitions. [2022-09-20 20:45:59,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.95) internal successors, (1899), 20 states have internal predecessors, (1899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:59,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:59,195 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:45:59,195 INFO L175 Difference]: Start difference. First operand has 859 places, 1301 transitions, 46720 flow. Second operand 20 states and 1899 transitions. [2022-09-20 20:45:59,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 878 places, 1432 transitions, 51940 flow [2022-09-20 20:46:03,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 871 places, 1432 transitions, 51382 flow, removed 203 selfloop flow, removed 7 redundant places. [2022-09-20 20:46:03,343 INFO L231 Difference]: Finished difference. Result has 878 places, 1329 transitions, 48721 flow [2022-09-20 20:46:03,344 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=46162, PETRI_DIFFERENCE_MINUEND_PLACES=852, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=445, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=837, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=48721, PETRI_PLACES=878, PETRI_TRANSITIONS=1329} [2022-09-20 20:46:03,345 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 706 predicate places. [2022-09-20 20:46:03,345 INFO L495 AbstractCegarLoop]: Abstraction has has 878 places, 1329 transitions, 48721 flow [2022-09-20 20:46:03,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:03,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:03,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:46:03,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-09-20 20:46:03,345 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:46:03,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:03,346 INFO L85 PathProgramCache]: Analyzing trace with hash -88849, now seen corresponding path program 36 times [2022-09-20 20:46:03,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:03,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003241960] [2022-09-20 20:46:03,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:03,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:03,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:03,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:03,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003241960] [2022-09-20 20:46:03,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003241960] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:03,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:03,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-09-20 20:46:03,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870075921] [2022-09-20 20:46:03,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:03,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-20 20:46:03,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:03,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-20 20:46:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-09-20 20:46:03,752 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-09-20 20:46:03,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 878 places, 1329 transitions, 48721 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:03,753 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:03,753 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-09-20 20:46:03,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:12,074 INFO L130 PetriNetUnfolder]: 3584/12564 cut-off events. [2022-09-20 20:46:12,074 INFO L131 PetriNetUnfolder]: For 544607/544607 co-relation queries the response was YES. [2022-09-20 20:46:12,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76145 conditions, 12564 events. 3584/12564 cut-off events. For 544607/544607 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 141319 event pairs, 2057 based on Foata normal form. 1/12300 useless extension candidates. Maximal degree in co-relation 75863. Up to 4834 conditions per place. [2022-09-20 20:46:12,460 INFO L137 encePairwiseOnDemand]: 163/186 looper letters, 888 selfloop transitions, 474 changer transitions 0/1424 dead transitions. [2022-09-20 20:46:12,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 895 places, 1424 transitions, 52578 flow [2022-09-20 20:46:12,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-20 20:46:12,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-20 20:46:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1891 transitions. [2022-09-20 20:46:12,461 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5083333333333333 [2022-09-20 20:46:12,462 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1891 transitions. [2022-09-20 20:46:12,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1891 transitions. [2022-09-20 20:46:12,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:12,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1891 transitions. [2022-09-20 20:46:12,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.55) internal successors, (1891), 20 states have internal predecessors, (1891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:12,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:12,465 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:12,465 INFO L175 Difference]: Start difference. First operand has 878 places, 1329 transitions, 48721 flow. Second operand 20 states and 1891 transitions. [2022-09-20 20:46:12,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 895 places, 1424 transitions, 52578 flow [2022-09-20 20:46:16,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 889 places, 1424 transitions, 52004 flow, removed 219 selfloop flow, removed 6 redundant places. [2022-09-20 20:46:16,761 INFO L231 Difference]: Finished difference. Result has 889 places, 1327 transitions, 49031 flow [2022-09-20 20:46:16,762 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=48083, PETRI_DIFFERENCE_MINUEND_PLACES=870, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=474, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=853, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=49031, PETRI_PLACES=889, PETRI_TRANSITIONS=1327} [2022-09-20 20:46:16,763 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 717 predicate places. [2022-09-20 20:46:16,763 INFO L495 AbstractCegarLoop]: Abstraction has has 889 places, 1327 transitions, 49031 flow [2022-09-20 20:46:16,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:16,763 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:16,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:46:16,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-09-20 20:46:16,764 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:46:16,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:16,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1132608531, now seen corresponding path program 1 times [2022-09-20 20:46:16,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:16,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960524206] [2022-09-20 20:46:16,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:16,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:17,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:17,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:17,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960524206] [2022-09-20 20:46:17,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960524206] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:17,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:17,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-09-20 20:46:17,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198477213] [2022-09-20 20:46:17,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:17,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-09-20 20:46:17,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:17,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-09-20 20:46:17,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=585, Unknown=0, NotChecked=0, Total=650 [2022-09-20 20:46:17,477 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 186 [2022-09-20 20:46:17,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 1327 transitions, 49031 flow. Second operand has 26 states, 26 states have (on average 87.61538461538461) internal successors, (2278), 26 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:17,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:17,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 186 [2022-09-20 20:46:17,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:28,670 INFO L130 PetriNetUnfolder]: 4466/16196 cut-off events. [2022-09-20 20:46:28,670 INFO L131 PetriNetUnfolder]: For 611429/611470 co-relation queries the response was YES. [2022-09-20 20:46:29,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92185 conditions, 16196 events. 4466/16196 cut-off events. For 611429/611470 co-relation queries the response was YES. Maximal size of possible extension queue 1000. Compared 199937 event pairs, 1395 based on Foata normal form. 33/15863 useless extension candidates. Maximal degree in co-relation 91903. Up to 4728 conditions per place. [2022-09-20 20:46:29,071 INFO L137 encePairwiseOnDemand]: 153/186 looper letters, 987 selfloop transitions, 622 changer transitions 21/1785 dead transitions. [2022-09-20 20:46:29,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 919 places, 1785 transitions, 64715 flow [2022-09-20 20:46:29,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-09-20 20:46:29,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-09-20 20:46:29,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2828 transitions. [2022-09-20 20:46:29,073 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4904613250086715 [2022-09-20 20:46:29,073 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2828 transitions. [2022-09-20 20:46:29,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2828 transitions. [2022-09-20 20:46:29,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:29,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2828 transitions. [2022-09-20 20:46:29,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 91.2258064516129) internal successors, (2828), 31 states have internal predecessors, (2828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:29,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 186.0) internal successors, (5952), 32 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:29,078 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 186.0) internal successors, (5952), 32 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:29,079 INFO L175 Difference]: Start difference. First operand has 889 places, 1327 transitions, 49031 flow. Second operand 31 states and 2828 transitions. [2022-09-20 20:46:29,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 919 places, 1785 transitions, 64715 flow [2022-09-20 20:46:33,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 839 places, 1785 transitions, 62960 flow, removed 232 selfloop flow, removed 80 redundant places. [2022-09-20 20:46:33,172 INFO L231 Difference]: Finished difference. Result has 854 places, 1539 transitions, 54917 flow [2022-09-20 20:46:33,173 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=47373, PETRI_DIFFERENCE_MINUEND_PLACES=809, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=430, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=803, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=54917, PETRI_PLACES=854, PETRI_TRANSITIONS=1539} [2022-09-20 20:46:33,174 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 682 predicate places. [2022-09-20 20:46:33,174 INFO L495 AbstractCegarLoop]: Abstraction has has 854 places, 1539 transitions, 54917 flow [2022-09-20 20:46:33,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 87.61538461538461) internal successors, (2278), 26 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:33,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:33,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:46:33,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-09-20 20:46:33,174 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:46:33,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:33,175 INFO L85 PathProgramCache]: Analyzing trace with hash -826476659, now seen corresponding path program 2 times [2022-09-20 20:46:33,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:33,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738152497] [2022-09-20 20:46:33,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:33,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:33,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:33,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:33,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738152497] [2022-09-20 20:46:33,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738152497] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:33,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:33,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-09-20 20:46:33,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552602934] [2022-09-20 20:46:33,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:33,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-20 20:46:33,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:33,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-20 20:46:33,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-09-20 20:46:33,920 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 186 [2022-09-20 20:46:33,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 854 places, 1539 transitions, 54917 flow. Second operand has 29 states, 29 states have (on average 86.37931034482759) internal successors, (2505), 29 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:33,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:33,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 186 [2022-09-20 20:46:33,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:46:47,685 INFO L130 PetriNetUnfolder]: 4915/17915 cut-off events. [2022-09-20 20:46:47,685 INFO L131 PetriNetUnfolder]: For 702765/702840 co-relation queries the response was YES. [2022-09-20 20:46:47,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109514 conditions, 17915 events. 4915/17915 cut-off events. For 702765/702840 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 225294 event pairs, 1819 based on Foata normal form. 41/17567 useless extension candidates. Maximal degree in co-relation 109289. Up to 8391 conditions per place. [2022-09-20 20:46:48,051 INFO L137 encePairwiseOnDemand]: 150/186 looper letters, 917 selfloop transitions, 713 changer transitions 56/1840 dead transitions. [2022-09-20 20:46:48,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 886 places, 1840 transitions, 65921 flow [2022-09-20 20:46:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-09-20 20:46:48,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-09-20 20:46:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3558 transitions. [2022-09-20 20:46:48,054 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4782258064516129 [2022-09-20 20:46:48,054 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3558 transitions. [2022-09-20 20:46:48,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3558 transitions. [2022-09-20 20:46:48,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:46:48,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3558 transitions. [2022-09-20 20:46:48,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 88.95) internal successors, (3558), 40 states have internal predecessors, (3558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:48,060 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 186.0) internal successors, (7626), 41 states have internal predecessors, (7626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:48,060 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 186.0) internal successors, (7626), 41 states have internal predecessors, (7626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:48,060 INFO L175 Difference]: Start difference. First operand has 854 places, 1539 transitions, 54917 flow. Second operand 40 states and 3558 transitions. [2022-09-20 20:46:48,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 886 places, 1840 transitions, 65921 flow [2022-09-20 20:46:53,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 867 places, 1840 transitions, 64646 flow, removed 148 selfloop flow, removed 19 redundant places. [2022-09-20 20:46:53,145 INFO L231 Difference]: Finished difference. Result has 878 places, 1650 transitions, 58531 flow [2022-09-20 20:46:53,146 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=53785, PETRI_DIFFERENCE_MINUEND_PLACES=828, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1539, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=625, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=884, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=58531, PETRI_PLACES=878, PETRI_TRANSITIONS=1650} [2022-09-20 20:46:53,146 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 706 predicate places. [2022-09-20 20:46:53,146 INFO L495 AbstractCegarLoop]: Abstraction has has 878 places, 1650 transitions, 58531 flow [2022-09-20 20:46:53,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 86.37931034482759) internal successors, (2505), 29 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:53,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:46:53,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:46:53,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-09-20 20:46:53,147 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:46:53,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:46:53,147 INFO L85 PathProgramCache]: Analyzing trace with hash 15682175, now seen corresponding path program 3 times [2022-09-20 20:46:53,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:46:53,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78535844] [2022-09-20 20:46:53,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:46:53,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:46:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:46:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:46:53,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:46:53,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78535844] [2022-09-20 20:46:53,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78535844] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:46:53,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:46:53,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-09-20 20:46:53,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062230968] [2022-09-20 20:46:53,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:46:53,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-09-20 20:46:53,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:46:53,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-09-20 20:46:53,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2022-09-20 20:46:53,791 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 186 [2022-09-20 20:46:53,792 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 878 places, 1650 transitions, 58531 flow. Second operand has 26 states, 26 states have (on average 87.61538461538461) internal successors, (2278), 26 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:46:53,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:46:53,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 186 [2022-09-20 20:46:53,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:47:07,221 INFO L130 PetriNetUnfolder]: 4854/17835 cut-off events. [2022-09-20 20:47:07,222 INFO L131 PetriNetUnfolder]: For 704842/704900 co-relation queries the response was YES. [2022-09-20 20:47:07,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113019 conditions, 17835 events. 4854/17835 cut-off events. For 704842/704900 co-relation queries the response was YES. Maximal size of possible extension queue 1135. Compared 226041 event pairs, 1460 based on Foata normal form. 46/17455 useless extension candidates. Maximal degree in co-relation 112791. Up to 4844 conditions per place. [2022-09-20 20:47:07,746 INFO L137 encePairwiseOnDemand]: 154/186 looper letters, 1037 selfloop transitions, 670 changer transitions 49/1911 dead transitions. [2022-09-20 20:47:07,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 898 places, 1911 transitions, 69506 flow [2022-09-20 20:47:07,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-20 20:47:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-09-20 20:47:07,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2735 transitions. [2022-09-20 20:47:07,749 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.49014336917562723 [2022-09-20 20:47:07,749 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2735 transitions. [2022-09-20 20:47:07,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2735 transitions. [2022-09-20 20:47:07,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:47:07,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2735 transitions. [2022-09-20 20:47:07,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 91.16666666666667) internal successors, (2735), 30 states have internal predecessors, (2735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:47:07,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 186.0) internal successors, (5766), 31 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:47:07,753 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 186.0) internal successors, (5766), 31 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:47:07,754 INFO L175 Difference]: Start difference. First operand has 878 places, 1650 transitions, 58531 flow. Second operand 30 states and 2735 transitions. [2022-09-20 20:47:07,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 898 places, 1911 transitions, 69506 flow [2022-09-20 20:47:12,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 879 places, 1911 transitions, 69153 flow, removed 156 selfloop flow, removed 19 redundant places. [2022-09-20 20:47:12,772 INFO L231 Difference]: Finished difference. Result has 887 places, 1652 transitions, 59722 flow [2022-09-20 20:47:12,773 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=58238, PETRI_DIFFERENCE_MINUEND_PLACES=850, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1650, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=664, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=982, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=59722, PETRI_PLACES=887, PETRI_TRANSITIONS=1652} [2022-09-20 20:47:12,773 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 715 predicate places. [2022-09-20 20:47:12,773 INFO L495 AbstractCegarLoop]: Abstraction has has 887 places, 1652 transitions, 59722 flow [2022-09-20 20:47:12,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 87.61538461538461) internal successors, (2278), 26 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:47:12,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:47:12,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:47:12,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-09-20 20:47:12,774 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:47:12,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:47:12,774 INFO L85 PathProgramCache]: Analyzing trace with hash 875116533, now seen corresponding path program 4 times [2022-09-20 20:47:12,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:47:12,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287020466] [2022-09-20 20:47:12,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:47:12,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:47:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:47:13,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:47:13,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:47:13,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287020466] [2022-09-20 20:47:13,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287020466] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:47:13,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:47:13,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-09-20 20:47:13,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076707271] [2022-09-20 20:47:13,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:47:13,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-20 20:47:13,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:47:13,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-20 20:47:13,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=637, Unknown=0, NotChecked=0, Total=702 [2022-09-20 20:47:13,568 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 186 [2022-09-20 20:47:13,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 887 places, 1652 transitions, 59722 flow. Second operand has 27 states, 27 states have (on average 87.51851851851852) internal successors, (2363), 27 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:47:13,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:47:13,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 186 [2022-09-20 20:47:13,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:47:26,781 INFO L130 PetriNetUnfolder]: 4803/17620 cut-off events. [2022-09-20 20:47:26,781 INFO L131 PetriNetUnfolder]: For 734756/734791 co-relation queries the response was YES. [2022-09-20 20:47:27,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115391 conditions, 17620 events. 4803/17620 cut-off events. For 734756/734791 co-relation queries the response was YES. Maximal size of possible extension queue 1120. Compared 222078 event pairs, 1629 based on Foata normal form. 19/17223 useless extension candidates. Maximal degree in co-relation 115160. Up to 4844 conditions per place. [2022-09-20 20:47:27,223 INFO L137 encePairwiseOnDemand]: 154/186 looper letters, 1032 selfloop transitions, 668 changer transitions 38/1893 dead transitions. [2022-09-20 20:47:27,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 909 places, 1893 transitions, 69840 flow [2022-09-20 20:47:27,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-09-20 20:47:27,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-09-20 20:47:27,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2832 transitions. [2022-09-20 20:47:27,225 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4911550468262227 [2022-09-20 20:47:27,225 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2832 transitions. [2022-09-20 20:47:27,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2832 transitions. [2022-09-20 20:47:27,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:47:27,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2832 transitions. [2022-09-20 20:47:27,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 91.35483870967742) internal successors, (2832), 31 states have internal predecessors, (2832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:47:27,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 186.0) internal successors, (5952), 32 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:47:27,230 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 186.0) internal successors, (5952), 32 states have internal predecessors, (5952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:47:27,230 INFO L175 Difference]: Start difference. First operand has 887 places, 1652 transitions, 59722 flow. Second operand 31 states and 2832 transitions. [2022-09-20 20:47:27,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 909 places, 1893 transitions, 69840 flow [2022-09-20 20:47:32,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 887 places, 1893 transitions, 68777 flow, removed 27 selfloop flow, removed 22 redundant places. [2022-09-20 20:47:32,844 INFO L231 Difference]: Finished difference. Result has 892 places, 1642 transitions, 59762 flow [2022-09-20 20:47:32,846 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=58679, PETRI_DIFFERENCE_MINUEND_PLACES=857, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=668, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=984, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=59762, PETRI_PLACES=892, PETRI_TRANSITIONS=1642} [2022-09-20 20:47:32,848 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 720 predicate places. [2022-09-20 20:47:32,848 INFO L495 AbstractCegarLoop]: Abstraction has has 892 places, 1642 transitions, 59762 flow [2022-09-20 20:47:32,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 87.51851851851852) internal successors, (2363), 27 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:47:32,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:47:32,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:47:32,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-09-20 20:47:32,848 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:47:32,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:47:32,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2050526005, now seen corresponding path program 5 times [2022-09-20 20:47:32,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:47:32,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817034497] [2022-09-20 20:47:32,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:47:32,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:47:32,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:47:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:47:33,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:47:33,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817034497] [2022-09-20 20:47:33,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817034497] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:47:33,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:47:33,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-09-20 20:47:33,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731118687] [2022-09-20 20:47:33,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:47:33,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-09-20 20:47:33,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:47:33,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-09-20 20:47:33,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-09-20 20:47:33,505 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 186 [2022-09-20 20:47:33,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 1642 transitions, 59762 flow. Second operand has 26 states, 26 states have (on average 87.61538461538461) internal successors, (2278), 26 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:47:33,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:47:33,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 186 [2022-09-20 20:47:33,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:47:46,532 INFO L130 PetriNetUnfolder]: 4791/17543 cut-off events. [2022-09-20 20:47:46,532 INFO L131 PetriNetUnfolder]: For 746252/746285 co-relation queries the response was YES. [2022-09-20 20:47:46,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115950 conditions, 17543 events. 4791/17543 cut-off events. For 746252/746285 co-relation queries the response was YES. Maximal size of possible extension queue 1115. Compared 219946 event pairs, 1704 based on Foata normal form. 17/17129 useless extension candidates. Maximal degree in co-relation 115720. Up to 4844 conditions per place. [2022-09-20 20:47:46,853 INFO L137 encePairwiseOnDemand]: 154/186 looper letters, 1025 selfloop transitions, 656 changer transitions 49/1885 dead transitions. [2022-09-20 20:47:46,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 912 places, 1885 transitions, 69893 flow [2022-09-20 20:47:46,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-20 20:47:46,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-09-20 20:47:46,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2733 transitions. [2022-09-20 20:47:46,855 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.48978494623655916 [2022-09-20 20:47:46,855 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2733 transitions. [2022-09-20 20:47:46,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2733 transitions. [2022-09-20 20:47:46,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:47:46,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2733 transitions. [2022-09-20 20:47:46,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 91.1) internal successors, (2733), 30 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:47:46,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 186.0) internal successors, (5766), 31 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:47:46,860 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 186.0) internal successors, (5766), 31 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:47:46,860 INFO L175 Difference]: Start difference. First operand has 892 places, 1642 transitions, 59762 flow. Second operand 30 states and 2733 transitions. [2022-09-20 20:47:46,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 912 places, 1885 transitions, 69893 flow [2022-09-20 20:47:52,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 881 places, 1885 transitions, 68144 flow, removed 32 selfloop flow, removed 31 redundant places. [2022-09-20 20:47:52,074 INFO L231 Difference]: Finished difference. Result has 890 places, 1639 transitions, 59353 flow [2022-09-20 20:47:52,076 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=58089, PETRI_DIFFERENCE_MINUEND_PLACES=852, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=656, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=986, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=59353, PETRI_PLACES=890, PETRI_TRANSITIONS=1639} [2022-09-20 20:47:52,076 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 718 predicate places. [2022-09-20 20:47:52,076 INFO L495 AbstractCegarLoop]: Abstraction has has 890 places, 1639 transitions, 59353 flow [2022-09-20 20:47:52,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 87.61538461538461) internal successors, (2278), 26 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:47:52,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:47:52,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:47:52,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-09-20 20:47:52,077 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:47:52,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:47:52,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1540642125, now seen corresponding path program 6 times [2022-09-20 20:47:52,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:47:52,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474298429] [2022-09-20 20:47:52,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:47:52,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:47:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:47:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:47:52,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:47:52,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474298429] [2022-09-20 20:47:52,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474298429] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:47:52,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:47:52,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-09-20 20:47:52,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399938958] [2022-09-20 20:47:52,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:47:52,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-20 20:47:52,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:47:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-20 20:47:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-09-20 20:47:52,867 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 186 [2022-09-20 20:47:52,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 890 places, 1639 transitions, 59353 flow. Second operand has 27 states, 27 states have (on average 87.51851851851852) internal successors, (2363), 27 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:47:52,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:47:52,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 186 [2022-09-20 20:47:52,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:48:06,301 INFO L130 PetriNetUnfolder]: 5020/18527 cut-off events. [2022-09-20 20:48:06,302 INFO L131 PetriNetUnfolder]: For 776871/776920 co-relation queries the response was YES. [2022-09-20 20:48:06,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121309 conditions, 18527 events. 5020/18527 cut-off events. For 776871/776920 co-relation queries the response was YES. Maximal size of possible extension queue 1180. Compared 236438 event pairs, 1711 based on Foata normal form. 17/18109 useless extension candidates. Maximal degree in co-relation 121077. Up to 4844 conditions per place. [2022-09-20 20:48:06,663 INFO L137 encePairwiseOnDemand]: 154/186 looper letters, 1043 selfloop transitions, 724 changer transitions 51/1973 dead transitions. [2022-09-20 20:48:06,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 912 places, 1973 transitions, 73482 flow [2022-09-20 20:48:06,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-20 20:48:06,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-09-20 20:48:06,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3002 transitions. [2022-09-20 20:48:06,666 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.48908439231019873 [2022-09-20 20:48:06,666 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3002 transitions. [2022-09-20 20:48:06,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3002 transitions. [2022-09-20 20:48:06,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:48:06,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3002 transitions. [2022-09-20 20:48:06,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 90.96969696969697) internal successors, (3002), 33 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:06,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 186.0) internal successors, (6324), 34 states have internal predecessors, (6324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:06,673 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 186.0) internal successors, (6324), 34 states have internal predecessors, (6324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:06,673 INFO L175 Difference]: Start difference. First operand has 890 places, 1639 transitions, 59353 flow. Second operand 33 states and 3002 transitions. [2022-09-20 20:48:06,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 912 places, 1973 transitions, 73482 flow [2022-09-20 20:48:12,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 884 places, 1973 transitions, 71956 flow, removed 45 selfloop flow, removed 28 redundant places. [2022-09-20 20:48:12,481 INFO L231 Difference]: Finished difference. Result has 895 places, 1716 transitions, 64377 flow [2022-09-20 20:48:12,483 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=57988, PETRI_DIFFERENCE_MINUEND_PLACES=852, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1639, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=647, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=944, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=64377, PETRI_PLACES=895, PETRI_TRANSITIONS=1716} [2022-09-20 20:48:12,483 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 723 predicate places. [2022-09-20 20:48:12,483 INFO L495 AbstractCegarLoop]: Abstraction has has 895 places, 1716 transitions, 64377 flow [2022-09-20 20:48:12,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 87.51851851851852) internal successors, (2363), 27 states have internal predecessors, (2363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:12,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:48:12,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:48:12,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-09-20 20:48:12,484 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:48:12,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:48:12,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1524714395, now seen corresponding path program 7 times [2022-09-20 20:48:12,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:48:12,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481772207] [2022-09-20 20:48:12,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:12,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:48:12,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:48:13,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:48:13,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:48:13,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481772207] [2022-09-20 20:48:13,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481772207] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:48:13,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:48:13,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-09-20 20:48:13,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204503166] [2022-09-20 20:48:13,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:48:13,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-09-20 20:48:13,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:48:13,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-09-20 20:48:13,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-09-20 20:48:13,307 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 186 [2022-09-20 20:48:13,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 895 places, 1716 transitions, 64377 flow. Second operand has 26 states, 26 states have (on average 87.61538461538461) internal successors, (2278), 26 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:13,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:48:13,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 186 [2022-09-20 20:48:13,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:48:29,314 INFO L130 PetriNetUnfolder]: 5459/20753 cut-off events. [2022-09-20 20:48:29,314 INFO L131 PetriNetUnfolder]: For 883022/883063 co-relation queries the response was YES. [2022-09-20 20:48:30,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136918 conditions, 20753 events. 5459/20753 cut-off events. For 883022/883063 co-relation queries the response was YES. Maximal size of possible extension queue 1351. Compared 272764 event pairs, 1996 based on Foata normal form. 33/20350 useless extension candidates. Maximal degree in co-relation 136684. Up to 9976 conditions per place. [2022-09-20 20:48:30,174 INFO L137 encePairwiseOnDemand]: 155/186 looper letters, 1174 selfloop transitions, 729 changer transitions 49/2107 dead transitions. [2022-09-20 20:48:30,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 918 places, 2107 transitions, 80869 flow [2022-09-20 20:48:30,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-20 20:48:30,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-20 20:48:30,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3077 transitions. [2022-09-20 20:48:30,176 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.48655913978494625 [2022-09-20 20:48:30,176 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3077 transitions. [2022-09-20 20:48:30,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3077 transitions. [2022-09-20 20:48:30,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:48:30,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3077 transitions. [2022-09-20 20:48:30,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 90.5) internal successors, (3077), 34 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:30,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 186.0) internal successors, (6510), 35 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:30,181 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 186.0) internal successors, (6510), 35 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:30,181 INFO L175 Difference]: Start difference. First operand has 895 places, 1716 transitions, 64377 flow. Second operand 34 states and 3077 transitions. [2022-09-20 20:48:30,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 918 places, 2107 transitions, 80869 flow [2022-09-20 20:48:37,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 896 places, 2107 transitions, 80463 flow, removed 49 selfloop flow, removed 22 redundant places. [2022-09-20 20:48:37,549 INFO L231 Difference]: Finished difference. Result has 909 places, 1862 transitions, 74260 flow [2022-09-20 20:48:37,550 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=64049, PETRI_DIFFERENCE_MINUEND_PLACES=863, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1716, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=592, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1090, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=74260, PETRI_PLACES=909, PETRI_TRANSITIONS=1862} [2022-09-20 20:48:37,550 INFO L287 CegarLoopForPetriNet]: 172 programPoint places, 737 predicate places. [2022-09-20 20:48:37,551 INFO L495 AbstractCegarLoop]: Abstraction has has 909 places, 1862 transitions, 74260 flow [2022-09-20 20:48:37,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 87.61538461538461) internal successors, (2278), 26 states have internal predecessors, (2278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:48:37,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:48:37,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:48:37,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-09-20 20:48:37,551 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-09-20 20:48:37,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:48:37,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1208052997, now seen corresponding path program 8 times [2022-09-20 20:48:37,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:48:37,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922371877] [2022-09-20 20:48:37,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:48:37,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:48:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-20 20:48:37,581 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-09-20 20:48:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-09-20 20:48:37,633 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-09-20 20:48:37,633 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-09-20 20:48:37,634 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2022-09-20 20:48:37,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2022-09-20 20:48:37,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2022-09-20 20:48:37,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-09-20 20:48:37,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-09-20 20:48:37,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-09-20 20:48:37,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-09-20 20:48:37,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-09-20 20:48:37,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-09-20 20:48:37,637 INFO L444 BasicCegarLoop]: Path program histogram: [36, 8, 1, 1, 1, 1, 1] [2022-09-20 20:48:37,640 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 20:48:37,640 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 20:48:37,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 08:48:37 BasicIcfg [2022-09-20 20:48:37,717 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 20:48:37,717 INFO L158 Benchmark]: Toolchain (without parser) took 381242.83ms. Allocated memory was 179.3MB in the beginning and 6.8GB in the end (delta: 6.7GB). Free memory was 116.4MB in the beginning and 2.2GB in the end (delta: -2.1GB). Peak memory consumption was 4.6GB. Max. memory is 8.0GB. [2022-09-20 20:48:37,718 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 179.3MB. Free memory was 135.9MB in the beginning and 135.8MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 20:48:37,718 INFO L158 Benchmark]: CACSL2BoogieTranslator took 673.20ms. Allocated memory was 179.3MB in the beginning and 316.7MB in the end (delta: 137.4MB). Free memory was 116.2MB in the beginning and 244.1MB in the end (delta: -128.0MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB. [2022-09-20 20:48:37,718 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.35ms. Allocated memory is still 316.7MB. Free memory was 244.1MB in the beginning and 240.5MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-09-20 20:48:37,718 INFO L158 Benchmark]: Boogie Preprocessor took 28.19ms. Allocated memory is still 316.7MB. Free memory was 240.5MB in the beginning and 237.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-09-20 20:48:37,718 INFO L158 Benchmark]: RCFGBuilder took 667.34ms. Allocated memory is still 316.7MB. Free memory was 237.8MB in the beginning and 216.3MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2022-09-20 20:48:37,718 INFO L158 Benchmark]: TraceAbstraction took 379823.43ms. Allocated memory was 316.7MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 215.8MB in the beginning and 2.2GB in the end (delta: -2.0GB). Peak memory consumption was 4.5GB. Max. memory is 8.0GB. [2022-09-20 20:48:37,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 179.3MB. Free memory was 135.9MB in the beginning and 135.8MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 673.20ms. Allocated memory was 179.3MB in the beginning and 316.7MB in the end (delta: 137.4MB). Free memory was 116.2MB in the beginning and 244.1MB in the end (delta: -128.0MB). Peak memory consumption was 16.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.35ms. Allocated memory is still 316.7MB. Free memory was 244.1MB in the beginning and 240.5MB in the end (delta: 3.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.19ms. Allocated memory is still 316.7MB. Free memory was 240.5MB in the beginning and 237.8MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 667.34ms. Allocated memory is still 316.7MB. Free memory was 237.8MB in the beginning and 216.3MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 379823.43ms. Allocated memory was 316.7MB in the beginning and 6.8GB in the end (delta: 6.5GB). Free memory was 215.8MB in the beginning and 2.2GB in the end (delta: -2.0GB). Peak memory consumption was 4.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1675]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1676] 0 pthread_t t1,t2; VAL [t1={3:0}, t2={4:0}] [L1688] 0 struct device *my_dev; VAL [my_dev={0:0}, t1={3:0}, t2={4:0}] [L1733] CALL, EXPR 0 my_drv_init() [L1727] 0 return 0; VAL [\result=0, my_dev={0:0}, t1={3:0}, t2={4:0}] [L1733] RET, EXPR 0 my_drv_init() [L1733] 0 int ret = my_drv_init(); VAL [my_dev={0:0}, my_drv_init()=0, ret=0, t1={3:0}, t2={4:0}] [L1734] COND TRUE 0 ret==0 VAL [my_dev={0:0}, ret=0, t1={3:0}, t2={4:0}] [L1735] 0 int probe_ret; VAL [my_dev={0:0}, ret=0, t1={3:0}, t2={4:0}] [L1736] 0 struct my_data data; VAL [data={6:0}, my_dev={0:0}, ret=0, t1={3:0}, t2={4:0}] [L1737] CALL, EXPR 0 my_drv_probe(&data) [L1705] 0 data->shared.a = 0 VAL [data={6:0}, data={6:0}, my_dev={0:0}, t1={3:0}, t2={4:0}] [L1706] 0 data->shared.b = 0 VAL [data={6:0}, data={6:0}, my_dev={0:0}, t1={3:0}, t2={4:0}] [L1707] EXPR 0 data->shared.a VAL [data={6:0}, data={6:0}, data->shared.a=0, my_dev={0:0}, t1={3:0}, t2={4:0}] [L1707] CALL 0 ldv_assert(data->shared.a==0) [L1675] COND FALSE 0 !(!expression) VAL [\old(expression)=1, expression=1, my_dev={0:0}, t1={3:0}, t2={4:0}] [L1707] RET 0 ldv_assert(data->shared.a==0) [L1708] EXPR 0 data->shared.b VAL [data={6:0}, data={6:0}, data->shared.b=0, my_dev={0:0}, t1={3:0}, t2={4:0}] [L1708] CALL 0 ldv_assert(data->shared.b==0) [L1675] COND FALSE 0 !(!expression) VAL [\old(expression)=1, expression=1, my_dev={0:0}, t1={3:0}, t2={4:0}] [L1708] RET 0 ldv_assert(data->shared.b==0) [L1709] 0 int res = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=0, data={6:0}, data={6:0}, my_dev={0:0}, res=0, t1={3:0}, t2={4:0}] [L1710] COND FALSE 0 !(\read(res)) VAL [data={6:0}, data={6:0}, my_dev={0:0}, res=0, t1={3:0}, t2={4:0}] [L1712] 0 my_dev = &data->dev VAL [data={6:0}, data={6:0}, my_dev={6:24}, res=0, t1={3:0}, t2={4:0}] [L1713] FCALL, FORK 0 pthread_create(&t1, ((void *)0), my_callback, ((void *)0)) VAL [arg={0:0}, data={6:0}, data={6:0}, my_dev={6:24}, pthread_create(&t1, ((void *)0), my_callback, ((void *)0))=7, res=0, t1={3:0}, t2={4:0}] [L1690] 1 struct my_data *data; VAL [arg={0:0}, arg={0:0}, my_dev={6:24}, t1={3:0}, t2={4:0}] [L1714] FCALL, FORK 0 pthread_create(&t2, ((void *)0), my_callback, ((void *)0)) VAL [arg={0:0}, arg={0:0}, data={6:0}, data={6:0}, my_dev={6:24}, pthread_create(&t2, ((void *)0), my_callback, ((void *)0))=8, res=0, t1={3:0}, t2={4:0}] [L1715] 0 return 0; VAL [\result=0, arg={0:0}, arg={0:0}, data={6:0}, data={6:0}, my_dev={6:24}, res=0, t1={3:0}, t2={4:0}] [L1737] RET, EXPR 0 my_drv_probe(&data) [L1737] 0 probe_ret = my_drv_probe(&data) VAL [arg={0:0}, arg={0:0}, data={6:0}, my_dev={6:24}, my_drv_probe(&data)=0, probe_ret=0, ret=0, t1={3:0}, t2={4:0}] [L1738] COND TRUE 0 probe_ret==0 VAL [arg={0:0}, arg={0:0}, data={6:0}, my_dev={6:24}, probe_ret=0, ret=0, t1={3:0}, t2={4:0}] [L1739] CALL 0 my_drv_disconnect(&data) [L1690] 2 struct my_data *data; VAL [arg={0:0}, arg={0:0}, my_dev={6:24}, t1={3:0}, t2={4:0}] [L1691] 1 const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); VAL [__mptr={6:24}, arg={0:0}, arg={0:0}, my_dev={6:24}, t1={3:0}, t2={4:0}] [L1691] 1 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) VAL [__mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, my_dev={6:24}, t1={3:0}, t2={4:0}] [L1693] 1 data->shared.a = 1 VAL [__mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, my_dev={6:24}, t1={3:0}, t2={4:0}] [L1696] EXPR 1 data->shared.b [L1696] 1 int lb = data->shared.b; [L1691] 2 const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); VAL [__mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, lb=0, my_dev={6:24}, t1={3:0}, t2={4:0}] [L1691] 2 data = ({ const typeof( ((struct my_data *)0)->dev ) *__mptr = (my_dev); (struct my_data *)( (char *)__mptr - ((unsigned long) &((struct my_data *)0)->dev) );}) VAL [__mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, lb=0, my_dev={6:24}, t1={3:0}, t2={4:0}] [L1693] 2 data->shared.a = 1 VAL [__mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, lb=0, my_dev={6:24}, t1={3:0}, t2={4:0}] [L1696] EXPR 2 data->shared.b [L1696] 2 int lb = data->shared.b; [L1699] 1 data->shared.b = lb + 1 VAL [__mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, lb=0, my_dev={6:24}, t1={3:0}, t2={4:0}] [L1699] 2 data->shared.b = lb + 1 VAL [__mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, lb=0, my_dev={6:24}, t1={3:0}, t2={4:0}] [L1721] 0 void *status; VAL [__mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, data={6:0}, data={6:0}, lb=0, my_dev={6:24}, status={5:0}, t1={3:0}, t2={4:0}] [L1722] 0 \read(t1) VAL [\read(t1)=7, __mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, data={6:0}, data={6:0}, lb=0, my_dev={6:24}, status={5:0}, t1={3:0}, t2={4:0}] [L1701] 1 return 0; VAL [\result={0:0}, __mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, lb=0, my_dev={6:24}, t1={3:0}, t2={4:0}] [L1722] FCALL, JOIN 1 pthread_join(t1, &status) VAL [\read(t1)=7, \result={0:0}, __mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, data={6:0}, data={6:0}, lb=0, my_dev={6:24}, pthread_join(t1, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1701] 2 return 0; VAL [\result={0:0}, __mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, lb=0, my_dev={6:24}, t1={3:0}, t2={4:0}] [L1723] 0 \read(t2) VAL [\read(t2)=8, \result={0:0}, __mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, data={6:0}, data={6:0}, lb=0, my_dev={6:24}, status={5:0}, t1={3:0}, t2={4:0}] [L1723] FCALL, JOIN 2 pthread_join(t2, &status) VAL [\read(t2)=8, \result={0:0}, __mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, data={6:0}, data={6:0}, lb=0, my_dev={6:24}, pthread_join(t2, &status)={0:0}, status={5:0}, t1={3:0}, t2={4:0}] [L1739] RET 0 my_drv_disconnect(&data) [L1740] EXPR 0 data.shared.a VAL [\result={0:0}, __mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, data={6:0}, data.shared.a=1, lb=0, my_dev={6:24}, probe_ret=0, ret=0, t1={3:0}, t2={4:0}] [L1740] CALL 0 ldv_assert(data.shared.a==1) [L1675] COND FALSE 0 !(!expression) VAL [\old(expression)=1, \result={0:0}, __mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, expression=1, lb=0, my_dev={6:24}, t1={3:0}, t2={4:0}] [L1740] RET 0 ldv_assert(data.shared.a==1) [L1741] EXPR 0 data.shared.b VAL [\result={0:0}, __mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, data={6:0}, data.shared.b=1, lb=0, my_dev={6:24}, probe_ret=0, ret=0, t1={3:0}, t2={4:0}] [L1741] CALL 0 ldv_assert(data.shared.b==2) [L1675] COND TRUE 0 !expression VAL [\old(expression)=0, \result={0:0}, __mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, expression=0, lb=0, my_dev={6:24}, t1={3:0}, t2={4:0}] [L1675] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, __mptr={6:24}, arg={0:0}, arg={0:0}, data={6:0}, expression=0, lb=0, my_dev={6:24}, t1={3:0}, t2={4:0}] - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1675]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 1713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 190 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 379.6s, OverallIterations: 49, TraceHistogramMax: 1, PathProgramHistogramMax: 36, EmptinessCheckTime: 0.0s, AutomataDifference: 359.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15800 SdHoareTripleChecker+Valid, 19.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15800 mSDsluCounter, 24451 SdHoareTripleChecker+Invalid, 15.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25058 mSDsCounter, 2533 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36925 IncrementalHoareTripleChecker+Invalid, 39458 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2533 mSolverCounterUnsat, 3191 mSDtfsCounter, 36925 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1755 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1596 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9576 ImplicationChecksByTransitivity, 42.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74260occurred in iteration=48, InterpolantAutomatonStates: 1061, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 5740 NumberOfCodeBlocks, 5740 NumberOfCodeBlocksAsserted, 49 NumberOfCheckSat, 5563 ConstructedInterpolants, 0 QuantifiedInterpolants, 77141 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 48 InterpolantComputations, 48 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-09-20 20:48:37,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...